Commit graph

40142 commits

Author SHA1 Message Date
Russell King
ce63e6bd0a ARM: integrator: allow Integrator to be built with highmem
This fixes Integrator builds with highmem enabled; we need to
translate from 'struct page' to a DMA address, and this is not
possible without __pfn_to_bus().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-25 22:44:30 +00:00
Russell King
ab72b00734 ARM: Fix signal restart issues with NX and OABI compat
The signal restarting code was placed on the user stack when OABI
compatibility is enabled.  Unfortunately, with an EABI NX executable,
this results in an attempt to run code from the non-executable stack,
which segfaults the application.

Fix this by placing the code in the vectors page, along side the
signal return code, and directing the application to that code.

Reported-by: saeed bishara <saeed.bishara@gmail.com>
Tested-by: saeed bishara <saeed.bishara@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-25 15:39:37 +00:00
Tony Luck
8add570a70 Pull ticket-spinaphore into release branch 2009-10-23 17:59:06 -07:00
Tony Luck
48fade6c5a Pull ticket4byte into release branch 2009-10-23 17:58:54 -07:00
Arjan van de Ven
14a3f40aaf x86: Remove STACKPROTECTOR_ALL
STACKPROTECTOR_ALL has a really high overhead (runtime and stack
footprint) and is not really worth it protection wise (the
normal STACKPROTECTOR is in effect for all functions with
buffers already), so lets just remove the option entirely.

Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Eric Sandeen <sandeen@redhat.com>
LKML-Reference: <20091023073101.3dce4ebb@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-23 16:35:23 +02:00
Santosh Shilimkar
54341c9b74 omap4: Fix UART4 platform data on omap4
This patch removes the unnecessary UART4 platform which is under
data is wrong because of this

There is a separate platform structure for UART4

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-By: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 15:41:16 -07:00
Santosh Shilimkar
5b7815b5ca omap4: Allow omap_serial_early_init() for OMAP4430 board
This patch enables omap_serial_early_init() function for OMAP4430
SDP. Without this the bootup would throw oops in omap_serial_init().

Note that the ifndef CONFIG_ARCH_OMAP4 is split into two sections
to enable omap_serial_early_init(). This ifndef cannot be removed
until omap4 clock framework is implemented.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-By: Tony Lindgren <tony@atomide.com>
Reviewed-By: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 15:41:16 -07:00
Kevin Hilman
b427f92f8c omap3: PM: enable UART3 module wakeups
UART3 is in the PER powerdomain.  If PER goes idle/inactive
independently of CORE, for UART3 to wakeup it must have its wakeup
enable bits setup in PM_WKEN_PER.  This patch enables these bits.

The reason it works when PER and CORE work together is because when
CORE goes inactive/retention, the IOPAD wakeups are enabled and
trigger UART3 wakeup.

Without this patch, when the UART inactivity timer fires for UART3,
its clocks are disabled and it's unable to wakeup so will be unusable
until PER is awoken by another source.

Another way of testing is by keeping CORE on during suspend but
allowing PER to hit retention

  # echo 3 > /debug/pm_debug/core_pwrdm/suspend

then enter suspend

  # echo mem > /sys/power/state

Without this patch, UART3 will be unable to wakeup the system.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 15:41:16 -07:00
Tony Lindgren
60dbd8c95f omap2: Fix console serial port number for n8x0
With the recent changes omap serial ports match the physical
numbering like they should. Fix the kernel CMDLINE accordingly
so console works.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 15:41:16 -07:00
Tony Lindgren
d2fbf3451d omap2: Fix detection of n8x0
Otherwise the machine_is_nokia_n8*() does not work.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:48:13 -07:00
Janusz Krzysztofik
b3dba0b81e omap1: Fix DSP public peripherals support for ams-delta
DSP public peripherals used to work on OMAP1510 based (or all OMAP1 class?)
machines as long as old dspgateway code were present in the l-o tree. For
several months it is no longer included, breaking support for McBSP1 based
audio on Amstrad Delta, for example.

This patch, derived from the old dspgateway code, corrects the problem for the
board by simply taking the DSP out of reset state, I guess. That way, things
should not break when a new dsp code is added to the tree, and the change can
be reverted then.

If there are any reports on McBSP1 or other DSP public peripherals not working
for other OMAP1 machines (I've not heard of any for now), I can prepare a more
general patch providing an extra include file with a helper function defined.

Created and tested against linux-2.6.32-rc5

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:47:42 -07:00
Janusz Krzysztofik
c33da3a800 omap1: Fix redundant UARTs pin muxing that can break other hardware support
Commit 15ac408ee5 removed enabled_uart
and OMAP_TAG_UART. This works for mach-omap2, but causes issues on
mach-omap1 for some boards as the mach-omap1 serial.c was muxing
pins based on the enabled_uart flag for 15xx.

Fix this by muxing pins in board-*.c files for the 15xx boards for
the uart ports that had enabled_uart flag set before the commit
above.

Tested on Amsdtrad Delta only.

Note that in the future we should add support for powering down
the uarts with a timer like mach-omap2/serial.c does. Otherwise
the enabled uarts will be blocking retention-while-idle.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:47:42 -07:00
Hiroshi DOYU
dcc730dc9d omap: iommu: fix wrong condition check for SUPERSECTION
A bit (2 << 0) is set both on SECTION and SUPERSECTION. To identify
SUPERSECTION correctly, other bits should be compared too.

Reported-by: "Srinivas Pulukuru" <srinivas.pulukuru@ti.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:46:32 -07:00
Santosh Shilimkar
9da65a99e5 omap: SDMA: Fix omap_stop_dma() API for channel linking
OMAP sDMA driver API omap_stop_dma() doesn't really stop the dma when used
in linking scenario.

The DMA channel needs to be disabled before resetting the chain.
Also fix clearing of the OMAP_DMA_ACTIVE status in the linked case.

Cc: Hari n <hari.zoom@gmail.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:46:31 -07:00
Janusz Krzysztofik
6135434a54 omap: Fix omap-keypad by restoring old keypad.h without breaking omap2 boards that use matrix_keypad
Only mach-omap2 boards are currently using matrix_keypad. Allow
mach-omap1 boards to use the old style keypad.h without breaking.

Created against linux-2.6.32-rc5.
Compile tested with omap_3430sdp_defconfig and rx51_defconfig.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22 14:43:17 -07:00
Linus Torvalds
422b42fa79 Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Prevent kvm_init from corrupting debugfs structures
  KVM: MMU: fix pointer cast
  KVM: use proper hrtimer function to retrieve expiration time
2009-10-22 08:26:15 +09:00
Linus Torvalds
ab4ed677f3 Merge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Kill off stray HAVE_FTRACE_SYSCALLS reference.
  sh: Remove BKL from landisk gio.
  sh: disabled cache handling fix.
  sh: Fix up single page flushing to use PAGE_SIZE.
2009-10-22 08:17:15 +09:00
Linus Torvalds
4fe71dba2f Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: aesni-intel - Fix irq_fpu_usable usage
  crypto: padlock-sha - Fix stack alignment
2009-10-22 08:16:01 +09:00
Hartley Sweeten
c768e67625 ARM: 5769/1: CPU_ARM920T: remove dead Maverick EP9312 URL
Remove the URL listed for Maverick EP9312 since it is not available
and modify the help text appropriately.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21 13:09:37 +01:00
Hartley Sweeten
f248dc626e ARM: 5768/1: ep93xx: remove dead code in ep93xx_gpio_ab_irq_handler()
Remove unnecessary code in ep93xx_gpio_ab_irq_handler().

The desc calculation for gpio port B was left in when the following
commit was merged.

commit d8aa0251f1
Author: Dmitry Baryshkov <dbaryshkov@gmail.com>
Date:   Thu Oct 9 13:36:24 2008 +0100

    [ARM] 5298/1: Drop desc_handle_irq()

It's not needed so remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21 13:09:36 +01:00
Hartley Sweeten
fb78b11fc2 ARM: 5767/1: ep93xx: remove ep93xx_init_time() prototype
Remove unused prototype for ep93xx_init_time().  This function
is not defined in the kernel.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21 13:09:36 +01:00
Linus Walleij
faff8032ec ARM: 5765/1: Updated U300 defconfig
This updates the U300 to use all the drivers merged in during the
2.6.32 merge window.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21 13:08:42 +01:00
Yegor Yefremov
4726374fb4 ARM: 5766/1: Fix watchdog enabling for AT91SAM9G45
The macro for the watchdog has been changed from CONFIG_AT91SAM9_WATCHDOG
to CONFIG_AT91SAM9X_WATCHDOG due to AT91CAP9 chips support

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21 13:08:14 +01:00
Robin Holt
02dd0a0613 x86, UV: Set DELIVERY_MODE=4 for vector=NMI_VECTOR in uv_hub_send_ipi()
When sending a NMI_VECTOR IPI using the UV_HUB_IPI_INT register,
we need to ensure the delivery mode field of that register has
NMI delivery selected.

This makes those IPIs true NMIs, instead of flat IPIs. It
matters to reboot sequences and KGDB, both of which use NMI
IPIs.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.com>
Cc: Martin Hicks <mort@sgi.com>
Cc: <stable@kernel.org>
LKML-Reference: <20091020193620.877322000@alcatraz.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-21 13:31:13 +02:00
Huang Ying
13b79b9715 crypto: aesni-intel - Fix irq_fpu_usable usage
When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the
function is changed too, from mesuring whether kernel is using FPU,
that is, the FPU is NOT available, to measuring whether FPU is usable,
that is, the FPU is available.

But the usage of irq_fpu_usable in aesni-intel_glue.c is not changed
accordingly. This patch fixes this.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-10-20 16:20:47 +09:00
Leo Chen
8c5b0f9a85 ARM: 5764/1: bcmring: add oprofile pmu support
add oprofile pmu support for bcmring.

Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-17 20:10:22 +01:00
Russell King
50ad5f591b Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2009-10-17 16:29:01 +01:00
Stanislav Brabec
f6919eb411 [ARM] pxa/spitz: add gpio button support (fixes regression)
Updating desc for lid keys and resending patch with proper comments:
Define Spitz buttons as GPIO keys in a way compatible with the old driver:

On/Off: As Suspend EV_PWR key
Raw values of lid sensors SWA and SWB: As EV_SW switches
SWA: Display Down
SWB: Lid Closed
Recommended user space decoding:
SWA==0 & SWB==0: lid opened (landscape mode)
SWA==1 & SWB==0: invalid (or mechanic race condition)
SWA==0 & SWB==1: lid closed with display up (portrait mode or mechanic
                 race condition while closing to display-less mode)
SWA==1 & SWB==1: lid closed with display down (display-less mode)

AK_INT remote trigger is not mapped as input event. Without complete
remote driver and remote pull-up control it has no useful
interpretation.

Signed-off-by: Stanislav Brabec <utx@penguin.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-17 22:55:44 +08:00
Mike Rapoport
0bff2fc319 [ARM] pxa/cm-x300: fix mmc numbering
CM-X300 has libertas on mmc2 and  SD card slot on mmc1.
This patch fixes wrong MMC ports assignment.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-17 22:55:44 +08:00
Frederik Deweerdt
8a8365c560 KVM: MMU: fix pointer cast
On a 32 bits compile, commit 3da0dd433d
introduced the following warnings:

arch/x86/kvm/mmu.c: In function ‘kvm_set_pte_rmapp’:
arch/x86/kvm/mmu.c:770: warning: cast to pointer from integer of different size
arch/x86/kvm/mmu.c: In function ‘kvm_set_spte_hva’:
arch/x86/kvm/mmu.c:849: warning: cast from pointer to integer of different size

The following patch uses 'unsigned long' instead of u64 to match the
pointer size on both arches.

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-16 12:30:26 -03:00
Marcelo Tosatti
ace1546487 KVM: use proper hrtimer function to retrieve expiration time
hrtimer->base can be temporarily NULL due to racing hrtimer_start.
See switch_hrtimer_base/lock_hrtimer_base.

Use hrtimer_get_remaining which is robust against it.

CC: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-10-16 12:30:25 -03:00
Robin Holt
1d21e6e3ff x86, UV: Fix and clean up bau code to use uv_gpa_to_pnode()
Create an inline function to extract the pnode from a global
physical address and then convert the broadcast assist unit to
use the newly created uv_gpa_to_pnode function.

The open-coded code was wrong as well - it might explain a
few of our unexplained bau hangs.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Cliff Whickman <cpw@sgi.com>
Cc: linux-mm@kvack.org
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20091016112920.GZ8903@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-16 14:51:53 +02:00
Paul Mundt
f875295c4b sh: Kill off stray HAVE_FTRACE_SYSCALLS reference.
This seems to have popped back in via some merge damage. Kill it off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 18:14:19 +09:00
Roland Dreier
93ae5012a7 x86: Don't print number of MCE banks for every CPU
The MCE initialization code explicitly says it doesn't handle
asymmetric configurations where different CPUs support different
numbers of MCE banks, and it prints a big warning in that case.

Therefore, printing the "mce: CPU supports <x> MCE banks"
message into the kernel log for every CPU is pure redundancy
that clutters the log significantly for systems with lots of
CPUs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
LKML-Reference: <adaeip473qt.fsf@cisco.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-16 09:20:03 +02:00
Robin Holt
036ed8ba61 x86, UV: Fix information in __uv_hub_info structure
A few parts of the uv_hub_info structure are initialized
incorrectly.

 - n_val is being loaded with m_val.
 - gpa_mask is initialized with a bytes instead of an unsigned long.
 - Handle the case where none of the alias registers are used.

Lastly I converted the bau over to using the uv_hub_info->m_val
which is the correct value.

Without this patch, booting a large configuration hits a
problem where the upper bits of the gnode affect the pnode
and the bau will not operate.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.com>
Cc: Cliff Whickman <cpw@sgi.com>
Cc: stable@kernel.org
LKML-Reference: <20091015224946.396355000@alcatraz.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-16 08:18:34 +02:00
Thomas Gleixner
52a94909f0 sh: Remove BKL from landisk gio.
The open function got the BKL via the big push down. Replace it by
preempt_enable/disable as this is sufficient for an UP machine.

The ioctl can be unlocked because there is no functionality which
requires serialization. The usage by multiple callers is broken with
and without the BKL due to the local static variable addr.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 14:42:33 +09:00
Magnus Damm
5fb80ae8bd sh: disabled cache handling fix.
Add code to handle the cache disabled case. Fixes breakage introduced by
37443ef3f0 ("sh: Migrate SH-4 cacheflush
ops to function pointers."). Without this patch configuring caches off
with CONFIG_CACHE_OFF=y makes kfr2r09 and migo-r lock up in fbdev
deferred io or early user space.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 14:38:48 +09:00
Ingo Molnar
a5912f6b3e x86: Document linker script ASSERT() quirk
Older binutils breaks if ASSERT() is used without a sink
for the output.

For example 2.14.90.0.6 is known to be broken, the link
fails with:

  LD      .tmp_vmlinux1
  ld:arch/x86/kernel/vmlinux.lds:678: parse error

Document this quirk in all three files that use it.

  See:    http://marc.info/?l=linux-kbuild&m=124930110427870&w=2
  See[2]: d2ba8b2 ("x86: Fix assert syntax in vmlinux.lds.S")

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-16 07:18:46 +02:00
Valentin Sitdikov
a7a7c0e1d1 sh: Fix up single page flushing to use PAGE_SIZE.
Presently The SH-4 cache flushing code uses flush_cache_4096() for most
of the real flushing work, which breaks down to a fixed 4096 unroll and
increment. Not only is this sub-optimal for larger page sizes, it's also
uncovered a bug in sh4_flush_dcache_page() when large page sizes are used
and we have no cache aliases -- resulting in only a part of the page's
D-cache lines being written back.

Signed-off-by: Valentin Sitdikov <valentin.sitdikov@siemens.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 14:15:38 +09:00
Linus Torvalds
36d6f3ecbd Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  Revert "x86: linker script syntax nits"
  x86, perf_event: Rename 'performance counter interrupt'
2009-10-15 15:20:17 -07:00
Linus Torvalds
37a08b13eb Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pci: Fix MODPOST warning
  powerpc/oprofile: Add ppc750 CL as supported by oprofile
  powerpc: warning: allocated section `.data_nosave' not in segment
  powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"
  powerpc: Fix hypervisor TLB batching
  powerpc/mm: Fix hang accessing top of vmalloc space
  powerpc: Fix memory leak in axon_msi.c
  powerpc/pmac: Fix issues with sleep on some powerbooks
  powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler
  powerpc/ftrace: show real return addresses in modules
2009-10-15 15:15:03 -07:00
Linus Torvalds
13e356c977 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  OMAP2xxx clock: set up clockdomain pointer in struct clk
  OMAP: Fix race condition with autodeps
  omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop
  omap: Initialization of SDRC params on Zoom2
  omap: RX-51: Drop I2C-1 speed to 2200
  omap: SDMA: Fixing bug in omap_dma_set_global_params()
  omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
2009-10-15 15:09:55 -07:00
Randy Dunlap
b94b08081f [IA64] fix percpu warnings
Fix percpu types warning in ia64/sn:

arch/ia64/sn/kernel/setup.c:74: error: conflicting types for '__pcpu_scope___sn_cnodeid_to_nasid'
arch/ia64/include/asm/sn/arch.h:74: error: previous declaration of '__pcpu_scope___sn_cnodeid_to_nasid' was here

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jes Sorensen <jes@sgi.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-15 13:29:37 -07:00
Grant Likely
4bdf0bb7d6 powerpc/5200: Update defconfigs
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-10-15 10:40:47 -06:00
Wolfram Sang
db467ebd1f powerpc/boot/dts: drop obsolete 'fsl5200-clocking'
The 'fsl5200-clocking'-property was dropped since
0d1cde2358. Remove all occurences
in dts-files.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-10-15 09:58:27 -06:00
Heiko Schocher
830cb6fafc mpc5200: support for the MAN mpc5200 based board mucmc52
- serial Console on PSC1
- 64MB SDRAM
- MTD CFI Flash
- Ethernet FEC
- IDE support

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-10-15 09:33:24 -06:00
Heiko Schocher
371bc96b89 mpc5200: support for the MAN mpc5200 based board uc101
- serial Console on PSC1
- 64MB SDRAM
- MTD CFI Flash
- Ethernet FEC
- I2C with PCF8563 and Temp. Sensor ADM9240
- IDE support

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-10-15 09:29:32 -06:00
Santosh Shilimkar
daaeb6c938 ARM: 5763/1: ARM: SMP: Fix the BUG with CONFIG_PREEMPT enabled
This patch fixes the BUG: using smp_processor_id() in preemptible
Below is the stripped backtrace.

BUG: using smp_processor_id() in preemptible [00000000] code: init/1
caller is flush_tlb_mm+0x44/0x70
Backtrace:
[<c00225c4>] (dump_backtrace+0x0/0x110) from [<c01713a0>] (dump_stack+0x18/0x1c)
 r7:00000000 r6:c00234f0 r5:00000001 r4:c7828000
[<c0171388>] (dump_stack+0x0/0x1c) from [<c0135364>] (debug_smp_processor_id+0xc0/0xf0)
[<c01352a4>] (debug_smp_processor_id+0x0/0xf0) from [<c00234f0>] (flush_tlb_mm+0x44/0x70)
 r7:00000000 r6:c60b41a0 r5:c60b4154 r4:00000001
[<c00234ac>] (flush_tlb_mm+0x0/0x70) from [<c0039568>] (dup_mm+0x304/0x38c)
 r5:c1f09058 r4:00000000
[<c0039264>] (dup_mm+0x0/0x38c) from [<c0039de4>] (copy_process+0x7b8/0xeb0)
[<c003962c>] (copy_process+0x0/0xeb0) from [<c003a638>] (do_fork+0x15c/0x29c)
[<c003a4dc>] (do_fork+0x0/0x29c) from [<c0021df0>] (sys_clone+0x34/0x3c)
[<c0021dbc>] (sys_clone+0x0/0x3c) from [<c001efa0>] (ret_fast_syscall+0x0/0x2c)

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-15 15:45:15 +01:00
Russell King
e85d380710 Merge branch 'for-rmk-rc' of git://git.pengutronix.de/git/imx/linux-2.6 2009-10-15 12:11:51 +01:00
Ingo Molnar
db8590f504 Revert "x86: linker script syntax nits"
This reverts commit e9a63a4e55.

This breaks older binutils, where sink-less asserts are broken.

See this commit for further details:

  d2ba8b2: x86: Fix assert syntax in vmlinux.lds.S

Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 08:09:55 +02:00
Ingo Molnar
a0738a688d Merge branch 'linus' into x86/urgent
Merge reason: pull in latest, to be able to revert a patch there.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 08:07:30 +02:00
Benjamin Herrenschmidt
b734dd5b57 Merge commit 'ftrace/ppc' into merge 2009-10-15 14:09:11 +11:00
Tony Lindgren
1560523674 Merge branch '2_6_32rc4_fixes' of git://git.pwsan.com/linux-2.6 into omap-fixes-for-linus 2009-10-14 15:46:15 -07:00
Paul Walmsley
a7f20b2695 OMAP2xxx clock: set up clockdomain pointer in struct clk
clock24xx.c is missing a omap2_init_clk_clkdm() in its
omap2_clk_init() function.  Among other bad effects, this causes the
OMAP hwmod layer to oops on boot.

Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano
Panella <Stefano.Panella@csr.com> for reporting this bug.  Thanks to Tony
Lindgren <tony@atomide.com> for N800 booting advice.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Carlos Aguiar <carlos.aguiar@indt.org.br>
Cc: Stefano Panella <Stefano.Panella@csr.com>
Cc: Tony Lindgren <tony@atomide.com>
2009-10-14 16:40:37 -06:00
Kalle Jokiniemi
a0219fbdac OMAP: Fix race condition with autodeps
There is a possible race condition in clockdomain
code handling hw supported idle transitions.

When multiple autodeps dependencies are being added
or removed, a transition of still remaining dependent
powerdomain can result in false readings of the
state counter. This is especially fatal for off mode
state counter, as it could result in a driver not
noticing a context loss.

Fixed by disabling hw supported state transitions
when autodeps are being changed.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-10-14 16:40:37 -06:00
Linus Torvalds
601adfedba Merge branch 'topic/x86-lds-nits' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland
* 'topic/x86-lds-nits' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
  x86: linker script syntax nits
2009-10-14 15:33:05 -07:00
Linus Torvalds
655bdb0e07 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  watchdog: Fix rio watchdog probe function
  sparc64: Set IRQF_DISABLED on LDC channel IRQs.
  sparc64: Fix D-cache flushing on swapin from SW devices.
  sparc64: Fix niagara2 perf IRQ bits.
2009-10-14 15:31:48 -07:00
Linus Torvalds
e7d688ec86 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] sclp_vt220 build fix
  [S390] cio: change misleading console logic
  [S390] call home support: fix proc handler
  [S390] dasd: use idal for device characteristics
  [S390] Add highgprs facility to /proc/cpuinfo
  [S390] dasd: fix locking bug
  [S390] tape390: Fix request queue handling in block driver
  [S390] hypfs: Use subcode 6 if subcode 7 is not available
2009-10-14 15:31:15 -07:00
Linus Torvalds
d470c05bed Merge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Fix a TRACE_IRQS_OFF typo.
  sh: Optimize the setup_rt_frame() I-cache flush.
  sh: Populate initial secondary CPU info from boot_cpu_data.
  sh: Tidy up SMP cpuinfo.
  sh: Use boot_cpu_data for FPU tests in sigcontext paths.
  sh: ftrace: Fix up syscall tracepoint support.
  sh: force dcache flush if dcache_dirty bit set.
  sh: update die() output.
2009-10-14 15:30:45 -07:00
Linus Torvalds
f061d83a2b Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix missing kernel-doc notation
  Revert "x86, timers: Check for pending timers after (device) interrupts"
  sched: Update the clock of runqueue select_task_rq() selected
2009-10-14 15:25:04 -07:00
Linus Torvalds
ea87644105 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/paravirt: Use normal calling sequences for irq enable/disable
  x86: fix kernel panic on 32 bits when profiling
  x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
  x86, vmi: Mark VMI deprecated and schedule it for removal
2009-10-14 15:24:32 -07:00
Roland McGrath
e9a63a4e55 x86: linker script syntax nits
The linker scripts grew some use of weirdly wrong linker script syntax.
It happens to work, but it's not what the syntax is documented to be.
Clean it up to use the official syntax.

Signed-off-by: Roland McGrath <roland@redhat.com>
CC: Ian Lance Taylor <iant@google.com>
2009-10-14 14:16:38 -07:00
Jarkko Nikula
a93d4ed205 omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop
This small typo written by author causes that McBSP receiver is disabled on
OMAP2430 and OMAP3430 even if only transmitter is stopped. This was noted
with ALSA SoC where simultaneous recording halted if playback was stopped
first.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14 09:56:35 -07:00
Teerth Reddy
02563a5d56 omap: Initialization of SDRC params on Zoom2
This patch initializes the correct SDRC settings required
for DVFS on Zoom2.

Signed-off-by: Teerth Reddy <teerth@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14 09:56:35 -07:00
Aaro Koskinen
cb3cc45ad9 omap: RX-51: Drop I2C-1 speed to 2200
The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited
by TWL5030/GAIA; a higher speed could lead to errors on the interface. The
maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz),
2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz).

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14 09:56:34 -07:00
Anuj Aggarwal
70cf644c34 omap: SDMA: Fixing bug in omap_dma_set_global_params()
Argument tparams was not being used to program
global register GCR.HI_THREAD_RESERVED. This patch fixes the same.

Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14 09:56:34 -07:00
Sanjeev Premi
dc6e56b199 omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
The symbol CONFIG_ISP1301_OMAP was defined twice in the
defconfig. This was causing the warning:
arch/arm/configs/omap3_beagle_defconfig:972:warning:
 override: reassigning to symbol ISP1301_OMAP

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14 09:56:33 -07:00
Peter Zijlstra
799e2205ec sched: Disable SD_PREFER_LOCAL for MC/CPU domains
Yanmin reported that both tbench and hackbench were significantly
hurt by trying to keep tasks local on these domains, esp on small
cache machines.

So disable it in order to promote spreading outside of the cache
domains.

Reported-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1255083400.8802.15.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-14 15:02:34 +02:00
Li Hong
89ccf465ab x86, perf_event: Rename 'performance counter interrupt'
In 'cdd6c482c9ff9c55475ee7392ec8f672eddb7be6', we renamed
Performance Counters -> Performance Events.

The name showed up in /proc/interrupts also needs a change. I use
PMI (Performance monitoring interrupt) here, since it is the
official name used in Intel's documents.

Signed-off-by: Li Hong <lihong.hi@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20091014105039.GA22670@uhli>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-14 14:37:24 +02:00
Andreas Krebbel
be6e3f9cd6 [S390] Add highgprs facility to /proc/cpuinfo
This patch makes the hwcap bit for the high gprs feature to be visible
in /proc/cpuinfo.

Signed-off-by: Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-14 12:43:53 +02:00
Michael Holzheu
7874b1b66a [S390] hypfs: Use subcode 6 if subcode 7 is not available
Hypfs never worked on systems that only provide D204 subcode 6.
In these cases we nevertheless used subcode 7. With this fix, we
use subcode 6, if it is available and the system does not provide
subcode 7.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-14 12:43:52 +02:00
Hartley Sweeten
3d977c012f ARM: 5760/1: ep93xx: fix build error in edb93xx.c
Fix a build error due to a typo (missing comma) in:

	ARM: 5754/1: ep93xx: update i2c support

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-14 10:33:06 +01:00
Artem Bityutskiy
cde3f86073 ARM: 5759/1: Add register information of threads to coredump
Defines ELF_CORE_COPY_TASK_REGS so that CPU register information
of every thread is included in coredump. Without this, only the faulting
thread is coredumped.

Cc: Roger Quadros <ext-roger.quadros@nokia.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-14 10:33:05 +01:00
Catalin Marinas
a771fe6e4e ARM: 5757/1: Thumb-2: Correct "mov.w pc, lr" instruction which is unpredictable
The 32-bit wide variant of "mov pc, reg" in Thumb-2 is unpredictable
causing improper handling of the undefined instructions not caught by
the kernel. This patch adds a movw_pc macro for such situations
(currently only used in call_fpe).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-14 10:33:05 +01:00
Paul Mundt
457b646189 sh: Fix a TRACE_IRQS_OFF typo.
The resume_userspace path had TRACE_IRQS_OFF written incorrectly and so
never handled the transition properly. This was fixed once before but
seems to have made it back in the tree. Fix it for good.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14 15:50:28 +09:00
Paul Mundt
4d2947f7c6 sh: Optimize the setup_rt_frame() I-cache flush.
This only needs to flush the return code via the legacy path, and just
invalidates uselessly otherwise. This makes the behaviour consistent for
all of the trampoline setup paths.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14 15:49:45 +09:00
Paul Mundt
a66c2edea5 sh: Populate initial secondary CPU info from boot_cpu_data.
The secondary CPU info was seeing corrupted results due to not entering
all of the setup paths taken by the boot CPU. So we just memcpy() the
boot cpu data over directly, and then fix up the per-CPU bits.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14 15:44:12 +09:00
Paul Mundt
2908df9e2c sh: Tidy up SMP cpuinfo.
Trivial change for cleaning up the cpuinfo pretty printing on SMP, adds a
newline between CPUs.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14 15:43:52 +09:00
Paul Mundt
eaa47704d9 sh: Use boot_cpu_data for FPU tests in sigcontext paths.
We do not want to use smp_processor_id() from these paths, as they trip
preempt BUGs. Switch the test over to the boot cpu directly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14 15:43:41 +09:00
Heiko Schocher
0f6023d599 powerpc/pci: Fix MODPOST warning
making a powerpc target with PCI support, shows the
following warning:

  MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x10430): Section mismatch in reference from the
function pcibios_allocate_bus_resources() to the function .init.text:reparent_resources()

The function pcibios_allocate_bus_resources() references
the function __init reparent_resources().

This is often because pcibios_allocate_bus_resources lacks a __init
annotation or the annotation of reparent_resources is wrong.

This patch fix this warning by removing the __init
annotation before reparent_resources.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:40 +11:00
Dragos Tatulea
04f5653477 powerpc/oprofile: Add ppc750 CL as supported by oprofile
Here's a patch that adds the ppc750 CL cpu as supported by oprofile.

Signed-off-by: Dragos Tatulea <dtatulea@ixiacom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:39 +11:00
Sean MacLennan
5be2a213b1 powerpc: warning: allocated section `.data_nosave' not in segment
We need to align before the output section. Having the align inside
the output section causes the linker to put some filler in there,
which makes it a non-empty section, but this section isn't assigned to
a segment so you get a warning from the linker.

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:39 +11:00
Anton Vorontsov
cf50f447b2 powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"
'acc' isn't used anywhere and thus triggers gcc warning, which causes
build error with CONFIG_PPC_DISABLE_WERROR=n (default):

  cc1: warnings being treated as errors
  arch/powerpc/kernel/kgdb.c: In function 'gdb_regs_to_pt_regs':
  arch/powerpc/kernel/kgdb.c:289: warning: unused variable 'acc'
  make[1]: *** [arch/powerpc/kernel/kgdb.o] Error 1

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:38 +11:00
Anton Blanchard
b6dcde5c74 powerpc: Fix hypervisor TLB batching
Profiling of a page fault scalability microbenchmark shows flush_hash_range
is not calling the batch hpte invalidate hcall (H_BULK_REMOVE).

It turns out we have a duplicate firmware feature for hcall-bulk and the
current setup code stops after finding the first match. This meant we never
batch and always do individual invalidates.

The patch below removes the duplicate and shifts FW_FEATURE_CMO to close
the gap. With the patch applied the single threaded page fault rate improves
from 217169 to 238755 per second on a POWER5 test box, a 10% improvement.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:37 +11:00
Benjamin Herrenschmidt
8d8997f34e powerpc/mm: Fix hang accessing top of vmalloc space
On pSeries, we always force the IO space to be mapped using 4K
pages even with a 64K base page size to cope with some limitations
in the HV interface to some devices.

However, the SLB miss handler code to discriminate between vmalloc
and ioremap space uses a CPU feature section such that the code
is nop'ed out when the processor support large pages non-cachable
mappings.

Thus, we end up always using the ioremap page size for vmalloc
segments on such processors, causing a discrepency between the
segment and the hash table, and thus a hang continously hashing
the page.

It works for the first segment of the vmalloc space since that
segment is "bolted" in by C code correctly, and thankfully we
almost never use the vmalloc space beyond the first segment,
but the new percpu code made the bug happen.

This fixes it by removing the feature section from the assembly,
we now always do the comparison between vmalloc and ioremap.

Signed-off-by; Benjamin Herrenschmidt <benh@kernel.crashing.org>

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:36 +11:00
Michael Ellerman
aee7a283bb powerpc: Fix memory leak in axon_msi.c
cppcheck found a memory leak in axon_msi, if dcr_base or dcr_len are zero,
we have already allocated msic, so we should free it in the error path.

Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:36 +11:00
Benjamin Herrenschmidt
11a50873ef powerpc/pmac: Fix issues with sleep on some powerbooks
Since the change of how interrupts are disabled during suspend,
certain PowerBook models started exhibiting various issues during
suspend or resume from sleep.

I finally tracked it down to the code that runs various "platform"
functions (kind of little scripts extracted from the device-tree),
which uses our i2c and PMU drivers expecting interrutps to work,
and at a time where with the new scheme, they have been disabled.

This causes timeouts internally which for some reason results in
the PMU being unable to see the trackpad, among other issues, really
it depends on the machine. Most of the time, we fail to properly adjust
some clocks for suspend/resume so the results are not always
predictable.

This patch fixes it by using IRQF_TIMER for both the PMU and the I2C
interrupts. I prefer doing it this way than moving the call sites since
I really want those platform functions to still be called after all
drivers (and before sysdevs).

We also do a slight cleanup to via-pmu.c driver to make sure the
ADB autopoll mask is handled correctly when doing bus resets

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14 16:58:35 +11:00
Tony Luck
1502f08edc [IA64] SMT friendly version of spin_unlock_wait()
We can be kinder to SMT systems in spin_unlock_wait.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-13 14:28:31 -07:00
Steven Rostedt
be10ab1090 powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler
The mod_return_to_handler needs to switch to the kernel TOC before
jumping to a the kernel code. It currently does this by looking
at the kernel function data and retrieves the TOC that way.

Not only is this inefficient, it also breaks with a relocatable kernel.
The PACA contains the kernel TOC and we can easily retrieve it that
way.

Reported-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-10-13 14:20:56 -07:00
Steven Rostedt
9135c3cc5a powerpc/ftrace: show real return addresses in modules
When the function graph tracer is enabled, it replaces the return address
with a hook back to the tracer. This makes back traces see the hook instead
of the actual return address.

The current code also shows the real address by checking if the return
address jumps to the return_to_handler. If it is, is also prints out
the saved real return address.

On powerpc64, some modules may return to mod_return_to_handler, which
is not checked. This patch will also show the real address if a return
is to mod_return_to_handler as well.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-10-13 14:20:55 -07:00
Marcin Slusarz
54f8dd3c99 [IA64] use printk_once() unaligned.c/io_common.c
Use printk_once() in a couple of places.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-13 12:48:25 -07:00
Matthew Wilcox
adcd740341 [IA64] Require SAL 3.2 in order to do extended config space ops
We had assumed that SAL firmware would return an error if it didn't
understand extended config space.  Unfortunately, the SAL on the SGI 750
doesn't do that, it panics the machine.  So, condition the extended PCI
config space accesses on SAL revision 3.2.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-13 10:44:42 -07:00
Roel Kluin
dec1798f81 [IA64] unsigned cannot be less than 0 in sn_hwperf_ioctl()
struct sn_hwperf_ioctl_args member arg (u64) cannot be less than 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-13 10:40:00 -07:00
Takao Indoh
29e4e025be [IA64] Restore registers in the stack on INIT
Registers are not saved anywhere when INIT comes during fsys mode and
we cannot know what happened when we investigate vmcore captured by
kdump. This patch adds new function finish_pt_regs() so registers can
be saved in such a case.

Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-13 10:37:14 -07:00
Linus Torvalds
80fa680d22 Merge git://git.infradead.org/~dwmw2/iommu-2.6.32
* git://git.infradead.org/~dwmw2/iommu-2.6.32:
  x86: Move pci_iommu_init to rootfs_initcall()
  Run pci_apply_final_quirks() sooner.
  Mark pci_apply_final_quirks() __init rather than __devinit
  Rename pci_init() to pci_apply_final_quirks(), move it to quirks.c
  intel-iommu: Yet another BIOS workaround: Isoch DMAR unit with no TLB space
  intel-iommu: Decode (and ignore) RHSA entries
  intel-iommu: Make "Unknown DMAR structure" message more informative
2009-10-13 10:04:40 -07:00
Valentin Longchamp
679bfef0e3 MXC: fix reset for mx31, mx35 and mx27 SoCs
The clock name for the watchdog devices was not set consistently
with mx21 on these platforms, resulting in the reset not to work.

Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13 10:24:10 +02:00
Guennadi Liakhovetski
d9e8b88478 fix pcm037_eet compilation with the new SPI driver
Fix pcm037_eet compilation with the new imx SPI driver by unifying
platform device names.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13 10:24:09 +02:00
Guennadi Liakhovetski
324c1aa3df fix compilation of i.MX31 platforms
mxc_iomux_v3_init() is defined in arch/arm/plat-mxc/iomux-v3.c, which is
not linked for i.MX31 and produces an undefined reference error. Fix this
by building the offending code only for i.MX35.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13 10:24:08 +02:00
Sascha Hauer
a90c31a3b7 pcm970 mmc: Fix ro switch
We have to use mxc_gpio_mode() for the card detection pin
instead of mxc_gpio_setup_multiple_pins() because the latter
does a gpio_request() and thus a later gpio_request() fails.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13 10:24:07 +02:00
Sascha Hauer
6153384161 pcm038: Add SPI/MC13783 support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13 10:24:02 +02:00
David S. Miller
c58543c869 sparc64: Set IRQF_DISABLED on LDC channel IRQs.
With lots of virtual devices it's easy to generate a lot of
events and chew up the kernel IRQ stack.

Reported-by: hyl <heyongli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-13 00:49:09 -07:00
Jeremy Fitzhardinge
71999d9862 x86/paravirt: Use normal calling sequences for irq enable/disable
Bastian Blank reported a boot crash with stackprotector enabled,
and debugged it back to edx register corruption.

For historical reasons irq enable/disable/save/restore had special
calling sequences to make them more efficient.  With the more
recent introduction of higher-level and more general optimisations
this is no longer necessary so we can just use the normal PVOP_
macros.

This fixes some residual bugs in the old implementations which left
edx liable to inadvertent clobbering. Also, fix some bugs in
__PVOP_VCALLEESAVE which were revealed by actual use.

Reported-by: Bastian Blank <bastian@waldi.eu.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
Cc: Xen-devel <xen-devel@lists.xensource.com>
LKML-Reference: <4AD3BC9B.7040501@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-13 09:22:01 +02:00
Paul Mundt
9922262242 sh: ftrace: Fix up syscall tracepoint support.
Sync up with latest core changes in the syscalls tracing area:

- tracing: Map syscall name to number (syscall_name_to_nr())
- tracing: Call arch_init_ftrace_syscalls at boot
- tracing: add support tracepoint ids (set_syscall_{enter,exit}_id())

Taken from the s390 change.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-13 12:42:48 +09:00
Paul Mundt
964f7e5a56 sh: force dcache flush if dcache_dirty bit set.
This too follows the ARM change, given that the issue at hand applies to
all platforms that implement lazy D-cache writeback.

This fixes up the case when a page mapping disappears between the
flush_dcache_page() call (when PG_dcache_dirty is set for the page) and
the update_mmu_cache() call -- such as in the case of swap cache being
freed early. This kills off the mapping test in update_mmu_cache() and
switches to simply testing for PG_dcache_dirty.

Reported-by: Nitin Gupta <ngupta@vflare.org>
Reported-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-13 11:18:34 +09:00
Paul Mundt
af67c3a9e6 sh: update die() output.
This follows the ARM change, as SH had all of the same issues:

Make die() better match x86:
- add printing of the last accessed sysfs file
- ensure console_verbose() is called under the lock
- ensure we panic outside of oops_exit()

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-13 10:57:52 +09:00
H. Peter Anvin
d1705c558c x86: fix kernel panic on 32 bits when profiling
Latest kernel has a kernel panic in booting on i386 machine when
profile=2 setting in cmdline.  It is due to 'sp' being incorrect in
profile_pc().

BUG: unable to handle kernel NULL pointer dereference at 00000246
IP: [<c01288b6>] profile_pc+0x2a/0x48
*pde = 00000000
Oops: 0000 [#1] SMP

This differs from the original version by Alex Shi in that we use the
kernel_stack_pointer() inline already defined in <asm/ptrace.h> for
this purpose, instead of #ifdef.

Originally-by: Alex Shi <alex.shi@intel.com>
Cc: "Chen, Tim C" <tim.c.chen@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-10-12 11:53:51 -07:00
Nitin Gupta
787b2faadc ARM: force dcache flush if dcache_dirty bit set
On ARM, update_mmu_cache() does dcache flush for a page only if
it has a kernel mapping (page_mapping(page) != NULL). The correct
behavior would be to force the flush based on dcache_dirty bit only.

One of the cases where present logic would be a problem is when
a RAM based block device[1] is used as a swap disk. In this case,
we would have in-memory data corruption as shown in steps below:

do_swap_page()
{
    - Allocate a new page (if not already in swap cache)
    - Issue read from swap disk
        - Block driver issues flush_dcache_page()
        - flush_dcache_page() simply sets PG_dcache_dirty bit and does not
          actually issue a flush since this page has no user space mapping yet.
    - Now, if swap disk is almost full, this newly read page is removed
      from swap cache and corrsponding swap slot is freed.
    - Map this page anonymously in user space.
    - update_mmu_cache()
        - Since this page does not have kernel mapping (its not in page/swap
          cache and is mapped anonymously), it does not issue dcache flush
          even if dcache_dirty bit is set by flush_dcache_page() above.

    <user now gets stale data since dcache was never flushed>
}

Same problem exists on mips too.

[1] example:
 - brd (RAM based block device)
 - ramzswap (RAM based compressed swap device)

Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-12 17:52:26 +01:00
Jan Beulich
7a4b7e5e74 x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
Move the trampoline and accessors back out of .cpuinit.* for the
case of 64-bits+ACPI_SLEEP.

This solves s2ram hangs reported in:

  http://bugzilla.kernel.org/show_bug.cgi?id=14279

Reported-and-bisected-by: Christian Casteyde <casteyde.christian@free.fr>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: <bugzilla-daemon@bugzilla.kernel.org>
Cc: "Andrew Morton" <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-12 18:06:48 +02:00
David Woodhouse
9a821b2316 x86: Move pci_iommu_init to rootfs_initcall()
We want this to happen after the PCI quirks, which are now running at
the very end of the fs_initcalls.

This works around the BIOS problems which were originally addressed by
commit db8be50c43 ('USB: Work around BIOS
bugs by quiescing USB controllers earlier'), which was reverted in
commit d93a8f829f.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-10-12 14:42:11 +01:00
Russell King
edc72786d2 Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2009-10-12 14:38:08 +01:00
David S. Miller
1a78cedb99 sparc64: Fix D-cache flushing on swapin from SW devices.
Thanks to tip form ARM folks and Russell King.

If flush_dcache_page() occurs on a swapin it will have a mapping
and we'll try to defer the flush by setting the dirty bit.

But when it hits update_dcache_page() we won't flush because the
page won't have a mapping any more.  So remove the mapping
requirement in flush_dcache().

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-12 03:20:57 -07:00
Dennis O'Brien
4367216a09 [ARM] pxa: workaround errata #37 by not using half turbo switching
PXA27x Errata #37 implies system will hang when switching into or out of
half turbo (HT bit in CLKCFG) mode, workaround this by not using it.

Signed-off-by: Dennis O'Brien <dennis.obrien@eqware.net>
Cc: stable-2.6.31 <stable@kernel.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-12 15:30:50 +08:00
Julia Lawall
c639ef4317 [ARM] pxa/csb726: adjust duplicate structure field initialization
Currently the irq_type field of the csb726_lan_config structure is
initialized twice.  The value in the first case,
SMSC911X_IRQ_POLARITY_ACTIVE_LOW, is normally stored in the irq_polarity
field, so I have renamed the field in the first initialization to that.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-12 15:30:50 +08:00
Yinghai Lu
15b812f1d0 pci: increase alignment to make more space for hidden code
As reported in

	http://bugzilla.kernel.org/show_bug.cgi?id=13940

on some system when acpi are enabled, acpi clears some BAR for some
devices without reason, and kernel will need to allocate devices for
them.  It then apparently hits some undocumented resource conflict,
resulting in non-working devices.

Try to increase alignment to get more safe range for unassigned devices.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-11 14:43:36 -07:00
Linus Torvalds
f144c78e52 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits)
  [S390] dasd: fix race condition in resume code
  [S390] Add EX_TABLE for addressing exception in usercopy functions.
  [S390] 64-bit register support for 31-bit processes
  [S390] hibernate: Use correct place for CPU address in lowcore
  [S390] pm: ignore time spend in suspended state
  [S390] zcrypt: Improve some comments
  [S390] zcrypt: Fix sparse warning.
  [S390] perf_counter: fix vdso detection
  [S390] ftrace: drop nmi protection
  [S390] compat: fix truncate system call wrapper
  [S390] Provide arch specific mdelay implementation.
  [S390] Fix enabled udelay for short delays.
  [S390] cio: allow setting boxed devices offline
  [S390] cio: make not operational handling consistent
  [S390] cio: make disconnected handling consistent
  [S390] Fix memory leak in /proc/cio_ignore
  [S390] cio: channel path memory leak
  [S390] module: fix memory leak in s390 module loader
  [S390] Enable kmemleak on s390.
  [S390] 3270 console build fix
  ...
2009-10-11 11:34:50 -07:00
Alexey Dobriyan
d43c36dc6b headers: remove sched.h from interrupt.h
After m68k's task_thread_info() doesn't refer to current,
it's possible to remove sched.h from interrupt.h and not break m68k!
Many thanks to Heiko Carstens for allowing this.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-10-11 11:20:58 -07:00
Russell King
6a5e293f1b ARM: Add kmap_atomic type debugging
Seemingly this support was missed when highmem was added, so
DEBUG_HIGHMEM wouldn't have checked the kmap_atomic type.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11 16:29:48 +01:00
Johannes Weiner
e9ac829185 ARM: boolean bit testing
Bit testing (test, testset, testclear, testchange) for bit numbers
known at compile time returns a word with the tested-for bit set.

Change it to return a true boolean value so to make it consistent with
the out-of-line path and all the other bitops implementations.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11 16:25:06 +01:00
Russell King
03a6e5bd5b ARM: update die() output
Make die() better match x86:
- add printing of the last accessed sysfs file
- ensure console_verbose() is called under the lock
- ensure we panic outside of oops_exit()

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11 15:25:05 +01:00
Russell King
e40c2ec676 ARM: Dump code/mem oops lines with the appropriate log level
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11 15:17:53 +01:00
Russell King
d191fe093f ARM: Dump memory and backtrace as one printk per line
dump_mem and dump_backtrace were both using multiple printk statements
to print each line.  With DEBUG_LL enabled, this causes OOPS to become
very difficult to read.  Solve this by only using one printk per line.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11 15:03:11 +01:00
Hartley Sweeten
ebd00c08e2 ARM: 5756/1: ep93xx: introduce clk parent
The clock generation system in the ep93xx uses two external oscillator's
and two internal PLLs to derive all the internal clocks.  Many of these
internal clocks can be stopped to save power.

This introduces a "parent" hierarchy for the clocks so that the users
count can be correctly tracked for power management.

The "parent" for the video clock can either be one of the PLL outputs
or the external oscillator.  In order to correctly track the "parent"
for the video clock calc_clk_div() needed to be modified.  It now
returns an error code if the desired rate cannot be generated.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-10 12:45:13 +01:00
Hartley Sweeten
6531a991f9 ARM: 5754/1: ep93xx: update i2c support
Update the ep93xx i2c support:

  1) The platform init code passes the configuration data for the
     i2c-gpio driver.  This allows any gpio pin do be used for the
     sda and scl pins.  It also allows the platform to specify the
     udelay and timeout.
  2) Program the gpio configuration register to enable/disable the
     open drain drivers.  Note that this really only works if the
     sda and scl pins are set to EP93XX_GPIO_LINE_EEDAT and
     EP93XX_GPIO_LINE_EECLK.
  3) Update the edb93xx.c platform init to use the new support.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-10 12:45:13 +01:00
Hartley Sweeten
03d38418a5 ARM: 5753/1: ep93xx: remove old EP93XX_GPIO_* defines
Most of the EP93XX_GPIO_*_INT_* register defines in ep93xx-regs.h
not required due to how the ep93xx core and gpiolib support handle
gpio interrupts.  Remove the defines to prevent future confusion.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-10 12:44:43 +01:00
Linus Torvalds
baf4974e49 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - print debug data when testing AUX IRQ delivery
  Input: libps2 - fix dependancy on i8042
  Input: fix rx51 board keymap
  Input: ad7879 - pass up error codes from probe functions
  Input: xpad - add BigBen Interactive XBOX 360 Controller
  Input: rotary_encoder - fix relative axis support
  Input: sparkspkr - move remove() functions to .devexit.text
  Input: wistron_btns - add DMI entry for Medion WIM2030 laptop
2009-10-09 13:32:24 -07:00
Linus Torvalds
79a6f56440 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
  Blackfin: convert to GENERIC_HARDIRQS_NO__DO_IRQ
  Blackfin: drop all simple-gpio board resources
  Blackfin: fix framebuffer mmap bug for nommu
  Blackfin: includecheck fix: mach-bf548, ezkit.c
  Blackfin: drop cs_change_per_word setting
  Blackfin: bf533-ezkit: convert to physmap/jedec_probe
  Blackfin: convert adv7393 resources to new i2c framework
  Blackfin: fix missed cache config renames
  Blackfin: cplbinfo: drop d_path() hacks
  Blackfin: asm/irq.h: pull in mach/anomaly.h for anomaly defines
  Blackfin: BF51x: add PTP MMR defines
  Blackfin: mass clean up of copyright/licensing info
  Blackfin: convert to use arch_gettimeoffset()
2009-10-09 13:31:47 -07:00
Tony Luck
883a3acf5b [IA64] Re-implement spinaphores using ticket lock concepts
Bound the wait time for the ptcg_sem by using similar idea to the
ticket spin locks.  In this case we have only one instance of a
spinaphore, so make it 8 bytes rather than try to squeeze it into
4-bytes to keep the code simpler (and shorter).

Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-09 10:52:39 -07:00
Joerg Roedel
c5cca146aa x86/amd-iommu: Workaround for erratum 63
There is an erratum for IOMMU hardware which documents
undefined behavior when forwarding SMI requests from
peripherals and the DTE of that peripheral has a sysmgt
value of 01b. This problem caused weird IO_PAGE_FAULTS in my
case.
This patch implements the suggested workaround for that
erratum into the AMD IOMMU driver.  The erratum is
documented with number 63.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-10-09 18:37:46 +02:00
Linus Torvalds
1442138372 Merge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Don't allocate smaller sized mappings on every iteration
  sh: Try PMB mapping based on physical address, not mapping size
  sh: Plug PMB alloc memory leak
  sh: Sprinkle __uses_jump_to_uncached
  sh: enable sleep state LEDs on Ecovec24
  usb: r8a66597-udc unaligned fifo fix
  sh: mach-ecovec24: Document DS2 switch settings.
  sh: Build fix: export __movmem
  sh: Disable unaligned kernel access printks by default.
  sh: mach-ecovec24: modify 1st MTD area to read only
  sh: mach-ecovec24: Add TouchScreen support
  sh: magicpanelr2 and dreamcast can use the generic I/O base.
  sh: Don't enable interrupts in the page fault path
  sh: Set the default I/O port base to P2SEG.
  sh: Handle ioport_map() cases for >= P1SEG addresses.
2009-10-09 09:34:52 -07:00
Ingo Molnar
e7ab0f7b50 Revert "x86, timers: Check for pending timers after (device) interrupts"
This reverts commit 9bcbdd9c58.

The real bug producing LatencyTop latencies has been fixed in:

  f5dc375: sched: Update the clock of runqueue select_task_rq() selected

And the commit being reverted here triggers local timer processing
from every device IRQ. If device IRQs come in at a high frequency,
this could cause a performance regression.

The commit being reverted here purely 'fixed' the reported latency
as a side effect, because CPUs were being moved out of idle more
often.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Frans Pop <elendil@planet.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <20091008064041.67219b13@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-09 15:58:20 +02:00
David S. Miller
de23cf3c42 sparc64: Fix niagara2 perf IRQ bits.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-09 00:42:40 -07:00
Matt Fleming
a2767cfb1d sh: Don't allocate smaller sized mappings on every iteration
Currently, we've got the less than ideal situation where if we need to
allocate a 256MB mapping we'll allocate four entries like so,

	 entry 1: 128MB
	 entry 2:  64MB
	 entry 3:  16MB
	 entry 4:  16MB

This is because as we execute the loop in pmb_remap() we will
progressively try mapping the remaining address space with smaller and
smaller sizes. This isn't good because the size we use on one iteration
may be the perfect size to use on the next iteration, for instance when
the initial size is divisible by one of the PMB mapping sizes.

With this patch, we now only need two entries in the PMB to map 256MB of
address space,

	  entry 1: 128MB
	  entry 2: 128MB

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-09 11:26:35 +09:00
Matt Fleming
2bea7ea7d5 sh: Try PMB mapping based on physical address, not mapping size
We should favour PMB mappings when the physical address cannot be
reached with 29-bits.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-09 11:25:10 +09:00
Matt Fleming
fc2bdefdde sh: Plug PMB alloc memory leak
If we fail to allocate a PMB entry in pmb_remap() we must remember to
clear and free any PMB entries that we may have previously allocated,
e.g. if we were allocating a multiple entry mapping.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-09 11:24:09 +09:00
Matt Fleming
a6325247f5 sh: Sprinkle __uses_jump_to_uncached
Fix some callers of jump_to_uncached() and back_to_cached() that were
not annotated with __uses_jump_to_uncached.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-09 11:23:57 +09:00
Magnus Damm
f78bab3070 sh: enable sleep state LEDs on Ecovec24
Extend the ecovec24 board code to enable Power
Management LEDs showing the current sh7724 sleep state.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-09 11:14:21 +09:00
Alok Kataria
d0153ca35d x86, vmi: Mark VMI deprecated and schedule it for removal
Add text in feature-removal.txt indicating that VMI will be removed in
the 2.6.37 timeframe.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
LKML-Reference: <1254193238.13456.48.camel@ank32.eng.vmware.com>
[ removed a bogus Kconfig change, marked (DEPRECATED) in Kconfig ]
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-08 22:27:55 +02:00
Linus Torvalds
624235c5b3 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, pci: Correct spelling in a comment
  x86: Simplify bound checks in the MTRR code
  x86: EDAC: carve out AMD MCE decoding logic
  initcalls: Add early_initcall() for modules
  x86: EDAC: MCE: Fix MCE decoding callback logic
2009-10-08 12:06:36 -07:00
Linus Torvalds
b924f9599d Merge branch 'sparc-perf-events-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sparc-perf-events-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  mm, perf_event: Make vmalloc_user() align base kernel virtual address to SHMLBA
  perf_event: Provide vmalloc() based mmap() backing
2009-10-08 12:05:50 -07:00
Linus Torvalds
7c1632ba76 Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, timers: Check for pending timers after (device) interrupts
  NOHZ: update idle state also when NOHZ is inactive
2009-10-08 12:04:04 -07:00
Linus Torvalds
d8e7b2b3ac Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omapfb: Blizzard: constify register address tables
  omapfb: Blizzard: fix pointer to be const
  omapfb: Condition mutex acquisition
  omap: iovmm: Add missing mutex_unlock
  omap: iovmm: Fix incorrect spelling
  omap: SRAM: flush the right address after memcpy in omap_sram_push
  omap: Lock DPLL5 at boot
  omap: Fix incorrect 730 vs 850 detection
  OMAP3: PM: introduce a new powerdomain walk helper
  OMAP3: PM: Enable GPIO module-level wakeups
  OMAP3: PM: USBHOST: clear wakeup events on both hosts
  OMAP3: PM: PRCM interrupt: only handle selected PRCM interrupts
  OMAP3: PM: PRCM interrupt: check MPUGRPSEL register
  OMAP3: PM: Prevent hang in prcm_interrupt_handler
2009-10-08 12:01:01 -07:00
Arjan van de Ven
9bcbdd9c58 x86, timers: Check for pending timers after (device) interrupts
Now that range timers and deferred timers are common, I found a
problem with these using the "perf timechart" tool. Frans Pop also
reported high scheduler latencies via LatencyTop, when using
iwlagn.

It turns out that on x86, these two 'opportunistic' timers only get
checked when another "real" timer happens. These opportunistic
timers have the objective to save power by hitchhiking on other
wakeups, as to avoid CPU wakeups by themselves as much as possible.

The change in this patch runs this check not only at timer
interrupts, but at all (device) interrupts. The effect is that:

 1) the deferred timers/range timers get delayed less

 2) the range timers cause less wakeups by themselves because
    the percentage of hitchhiking on existing wakeup events goes up.

I've verified the working of the patch using "perf timechart", the
original exposed bug is gone with this patch. Frans also reported
success - the latencies are now down in the expected ~10 msec
range.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Tested-by: Frans Pop <elendil@planet.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20091008064041.67219b13@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-08 17:27:27 +02:00
Linus Torvalds
385c51d6b1 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  agp: parisc-agp.c - use correct page_mask function
  parisc: Fix linker script breakage.
  parisc: convert to asm-generic/hardirq.h
  parisc: Make THREAD_SIZE available to assembly files and linker scripts.
  parisc: correct use of SHF_ALLOC
  parisc: rename parisc's vmalloc_start to parisc_vmalloc_start
  parisc: add me to Maintainers
  parisc: includecheck fix: signal.c
  parisc: HAVE_ARCH_TRACEHOOK
  parisc: add skeleton syscall.h
  parisc: stop using task->ptrace for {single,block}step flags
  parisc: split syscall_trace into two halves
  parisc: add missing TI_TASK macro in syscall.S
  parisc: tracehook_signal_handler
  parisc: tracehook_report_syscall
2009-10-08 07:40:19 -07:00
Michael Hennerich
796dada9f5 Blackfin: convert to GENERIC_HARDIRQS_NO__DO_IRQ
Blackfin already sets proper flow handlers on all IRQs, and we don't rely
on __do_IRQ, therefore we can simply select GENERIC_HARDIRQS_NO__DO_IRQ.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:20 -04:00
Mike Frysinger
282246dae8 Blackfin: drop all simple-gpio board resources
The simple-gpio has been replaced by the gpio sysfs interface, so drop the
unused simple-gpio resources from all Blackfin boards.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:18 -04:00
Thomas Chou
59bd00c850 Blackfin: fix framebuffer mmap bug for nommu
The patch added a special get_unmapped_area for framebuffer which
was hooked to the file ops in drivers/video/fbmem.c.

This is needed since v2.6.29-rc1 where nommu vma management was
updated, and mmap of framebuffer caused kernel BUG panic. You may turn
on "Debug the global anon/private NOMMU mapping region tree" config to
such message.

As Documentation/nommu-mmap.txt said,
"To provide shareable character device support, a driver must provide
a file->f_op->get_unmapped_area() operation. The mmap() routines will
call this to get a proposed address for the mapping."

With this change, user space should call mmap for framebuffer using
shared map. Or it can try shared map first, then private map if
failed. This shared map usage is now consistent between mmu and nommu.

The sys_ file may not be a good place for this patch. But there is a
similar one for sparc. I tested a similar patch on nios2nommu, though
I don't have a blackfin board to test.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:15 -04:00
Jaswinder Singh Rajput
4a7bcb4fe9 Blackfin: includecheck fix: mach-bf548, ezkit.c
Fix the following 'make includecheck' warning:

  arch/blackfin/mach-bf548/boards/ezkit.c: linux/input.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:13 -04:00
Mike Frysinger
5a2b0d7315 Blackfin: drop cs_change_per_word setting
Structs get initialized to 0 already, and we want to punt this field, so
scrub it from all of our boards.

Reported-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:11 -04:00
Mike Frysinger
7036c61fe0 Blackfin: bf533-ezkit: convert to physmap/jedec_probe
Now that the common jedec_probe supports the ST PSD4256G6V, no need to
use the custom stm_flash driver.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:58:07 -04:00
Michael Hennerich
50c4c0861a Blackfin: convert adv7393 resources to new i2c framework
Now that the driver has been updated, convert the board resources to the
new i2c framework for managing slaves.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-08 00:57:54 -04:00
Tony Luck
9d40ee200a [IA64] Squeeze ticket locks back into 4 bytes.
Linus pointed out that other people have spent large amounts of time
and effort to optimize the layout of frequently used structures. Often
these have embedded locks, and the assumption is that a lock takes
4 bytes.  Linus also pointed out how to work with the limited options
for atomic instructions on Itanium.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-10-07 10:54:19 -07:00
Hartley Sweeten
591006f830 ARM: 5729/1: ep93xx: define EP93XX_*_PHYS_BASE with macros
Change the #define's for the EP93XX_*_PHYS_BASE addresses to use
macros for easier readability.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:16:07 +01:00
Hubert Feurstein
7232344d49 ARM: 5751/1: ep93xx/micro9: Add Micro9-Slim
Add Contec Micro9-Slim support

Cc: Ryan Mallon <ryan@bluewatersys.com>

Requires: 5750/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:15:15 +01:00
Hubert Feurstein
14636005ff ARM: 5750/1: ep93xx/micro9: Update platform code
Update Contec Micro9 platform code

Cc: Ryan Mallon <ryan@bluewatersys.com>

Requires: 5749/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:15:15 +01:00
Hubert Feurstein
9415009544 ARM: 5749/1: ep93xx/micro9: Update maintainer
Update Contec Micro9 maintainer and add entry in MAINTAINERS

Cc: Ryan Mallon <ryan@bluewatersys.com>

Requires: 5744/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Manfred Gruber <m.gruber@tirol.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:15:14 +01:00
Dmitry Artamonow
4918a01393 ARM: 5752/1: SA1100: fix building of h3100
Both iPaqs h3100 and h3600 currently share the same source
file - h3600.c  But Makefile builds it only if CONFIG_SA1100_H3600
selected, so selecting just CONFIG_SA1100_H3100 results in
"no machine record defined" message and aborted compilation.

Fix it.

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:13:01 +01:00
Leo Chen
b623438341 ARM: 5748/1: bcmring: fix build warning messages
Fix the warning messages during kernel build for bcmring.

Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:13:01 +01:00
Catalin Marinas
3257f43d92 ARM: 5747/1: Fix the start_pg value in free_memmap()
If sparsemem is enabled, the start_pfn passed to the free_memmap()
function corresponds to an area of memory not known to the kernel and
pfn_to_page returns a wrong value. The (start_pfn - 1), however, is
known to the kernel.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:13:00 +01:00
Catalin Marinas
32cfb1b16f ARM: 5746/1: Handle possible translation errors in ARMv6/v7 coherent_user_range
This is needed because applications using the sys_cacheflush system call
can pass a memory range which isn't mapped yet even though the
corresponding vma is valid. The patch also adds unwinding annotations
for correct backtraces from the coherent_user_range() functions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:12:59 +01:00
Hartley Sweeten
cc1ad4a696 ARM: 5745/1: Change ep93xx gpio_irq static inlines to macros
From: Ryan Mallon <ryan@bluewatersys.com>

Change the gpio_to_irq and irq_to_gpio static inline functions to
macros so that they can be used in variable initialisers.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:12:58 +01:00
Hartley Sweeten
1f8db4fc12 ARM: 5744/1: ep93xx: add remaining phys offset selections
This adds the missing Kconfig options for the first SDRAM bank address
on ep93xx boards.

Cc: Hubert Feurstein <(address hidden)>
Signed-off-by: H Hartley Sweeten <(address hidden)>
Acked-by: Ryan Mallon <(address hidden)>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-07 13:11:56 +01:00
Graf Yang
19a3b6034a Blackfin: fix missed cache config renames
Looks like the big Kconfig cache split/rename missed one spot in the SMP
cache lock headers.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:48:08 -04:00
Mike Frysinger
48dee09325 Blackfin: cplbinfo: drop d_path() hacks
The cplbinfo was using d_path() to figure out which cpu/cplb was being
parsed.  As Al pointed out, this isn't exactly reliable as it assumes the
static VFS path to be unchanged, and it's just poor form.  So use the
proc_create_data() to properly (and internally) pass the exact cpu/cplb
requested to the parser function.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:48:04 -04:00
Mike Frysinger
d586e833f9 Blackfin: asm/irq.h: pull in mach/anomaly.h for anomaly defines
The asm/irq.h header uses anomaly defines, but doesn't make sure to
explicitly include the anomaly header for them.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:48:01 -04:00
Barry Song
6206f709d9 Blackfin: BF51x: add PTP MMR defines 2009-10-07 04:47:57 -04:00
Robin Getz
96f1050d3d Blackfin: mass clean up of copyright/licensing info
Bill Gatliff & David Brownell pointed out we were missing some
copyrights, and licensing terms in some of the files in
./arch/blackfin, so this fixes things, and cleans them up.

It also removes:
 - verbose GPL text(refer to the top level ./COPYING file)
 - file names (you are looking at the file)
 - bug url (it's in the ./MAINTAINERS file)
 - "or later" on GPL-2, when we did not have that right

It also allows some Blackfin-specific assembly files to be under a BSD
like license (for people to use them outside of Linux).

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:36:26 -04:00
john stultz
10f03f1a24 Blackfin: convert to use arch_gettimeoffset()
Convert Blackfin to use GENERIC_TIME via the arch_getoffset()
infrastructure, reducing the amount of arch specific code we need to
maintain.

I've taken my best swing at converting this, but I'm not 100% confident
I got it right.  My cross-compiler is now out of date (gcc4.2) so I
wasn't able to check if it compiled. Any assistance from arch
maintainers or testers to get this merged would be great.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:36:20 -04:00
Tony Lindgren
ab8d64d7d4 Merge branch 'pm-fixes-32' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-fixes-for-linus 2009-10-06 08:32:28 -07:00
Daniel Walker
265489003c omap: iovmm: Add missing mutex_unlock
I was using Coccinelle with the mutex_unlock semantic patch, and it
unconvered this problem. It appears to be a valid missing unlock issue.
This change should correct it by moving the unlock below the label.

This patch is against the mainline kernel.

Cc: Julia Lawall <julia@diku.dk>
Cc: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06 08:31:50 -07:00
Hiroshi DOYU
ba6a117944 omap: iovmm: Fix incorrect spelling
Fix incorrect spelling

Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06 08:31:50 -07:00
ye janboe
913b143ffa omap: SRAM: flush the right address after memcpy in omap_sram_push
the original flush operation is to flush the function address which is
copied from.
But we do not change the function code and it is not necessary to flush it.

Signed-off-by: janboe <janboe.ye@gmail.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-06 08:31:50 -07:00
Peter Zijlstra
906010b213 perf_event: Provide vmalloc() based mmap() backing
Some architectures such as Sparc, ARM and MIPS (basically
everything with flush_dcache_page()) need to deal with dcache
aliases by carefully placing pages in both kernel and user maps.

These architectures typically have to use vmalloc_user() for this.

However, on other architectures, vmalloc() is not needed and has
the downsides of being more restricted and slower than regular
allocations.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: David Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1254830228.21044.272.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06 14:21:50 +02:00
Gerald Schaefer
af9d2ff9af [S390] Add EX_TABLE for addressing exception in usercopy functions.
This patch adds an EX_TABLE entry to mvc{p|s|os} usercopy functions that
may be called with KERNEL_DS. In combination with collaborative memory
management, kernel pages marked as unused may trigger an adressing exception
in the usercopy functions. This fixes an unhandled addressing exception bug
where strncpy_from_user() is used with len > strnlen and KERNEL_DS, crossing
a page boundary to an unused page.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:10 +02:00
Heiko Carstens
ea2a4d3a3a [S390] 64-bit register support for 31-bit processes
From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:10 +02:00
Michael Holzheu
dd43bfca43 [S390] hibernate: Use correct place for CPU address in lowcore
We used address 0x1084 instead of 0x84 to store the suspend CPU address.
With this patch we use the correct address 0x84 as it is defined in
the POP.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:10 +02:00
Martin Schwidefsky
623c08e4cb [S390] pm: ignore time spend in suspended state
The time a system has been suspended should not show up in any
of the cputime accounting fields. The time of inactivity is definitly
not any form of real cputime nor is it idle time.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:09 +02:00
Heiko Carstens
930e44fbea [S390] perf_counter: fix vdso detection
s390 version of f2053f1a "powerpc/perf_counter: Fix vdso detection".

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:09 +02:00
Heiko Carstens
22ceaf408f [S390] ftrace: drop nmi protection
The function graph tracer used to have a protection against NMI
while entering a function entry tracing. But this is useless now,
the tracer is reentrant and the ring buffer supports NMI tracing.

Same as 07868b086c for x86.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:08 +02:00
Heiko Carstens
593c4f7398 [S390] compat: fix truncate system call wrapper
The system call takes a signed length parameter. So perform sign
extension instead of zero extension.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:08 +02:00
Heiko Carstens
0cd6a403e8 [S390] Provide arch specific mdelay implementation.
Use an own implementation instead of the common code udelay loop.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:08 +02:00
Christian Borntraeger
78d81f2f84 [S390] Fix enabled udelay for short delays.
When udelay() gets called with a delay that would expire before the
next clock event it reprograms the clock comparator.
When the interrupt happens the clock comparator won't be resetted
therefore the interrupt condition doesn't get cleared.
The result is an endless timer interrupt loop until the next clock
event would expire (stored in lowcore).
So udelay() usually would wait much longer for small delays than it
should.

Fix this by disabling the local tick which makes sure that the clock
comparator will be resetted when a timer interrupt happens.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:08 +02:00
Christian Borntraeger
6a03f5f0a0 [S390] module: fix memory leak in s390 module loader
The s390 version of module_frob_arch_sections allocates additional
syminfos for got and plt offsets. These syminfos are freed on
sucessful module load. If the module fails to load (e.g. missing
dependency when using insmod instead of modprobe) this area is not
freed.
This patch lets module_free free this area. Please note, we have to
set the pointer to NULL since module_free is called several times
from the generic code.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:06 +02:00
Heiko Carstens
dfcc3e6a8b [S390] Enable kmemleak on s390.
Also increase the maximum possible kmemleak early log entries since
2000 are not sufficient on s390.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:06 +02:00
Martin Schwidefsky
52a21f2cee [S390] fix build breakage with CONFIG_AIO=n
next-20090925 randconfig build breaks on s390x, with CONFIG_AIO=n.

arch/s390/mm/pgtable.c: In function 's390_enable_sie':
arch/s390/mm/pgtable.c:282: error: 'struct mm_struct' has no member named 'ioctx_list'
arch/s390/mm/pgtable.c:298: error: 'struct mm_struct' has no member named 'ioctx_list'
make[1]: *** [arch/s390/mm/pgtable.o] Error 1

Reported-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06 10:35:05 +02:00
Amit Kucheria
acf442dc56 Input: fix rx51 board keymap
The original driver was written with the KEY() macro defined as (col,
row) instead of (row, col) as defined by the matrix keypad
infrastructure. So the keymap was defined accordingly. Since the
driver that was merged upstream uses the matrix keypad infrastructure,
modify the keymap accordingly.

While we are at it, fix the comments in twl4030.h and define
PERSISTENT_KEY as (r,c) instead of (c, r)

Tested on a RX51 (N900) device.

Signed-off-by: Amit Kucheria <amit.kucheria@verdurent.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-10-05 22:00:39 -07:00
Rajendra Nayak
7a66a39b85 omap: Lock DPLL5 at boot
Lock DPLL5 at 120MHz at boot. The USBHOST 120MHz f-clock and
USBTLL f-clock are the only users of this DPLL, and 120MHz is
is the only recommended rate for these clocks.

With this patch, the 60 MHz ULPI clock is generated correctly.

Tested on an OMAP3430 SDP.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-05 13:31:44 -07:00
Tony Lindgren
a9f82d10d1 omap: Fix incorrect 730 vs 850 detection
Commit cd92204924 added
support for omap850. However, the patch accidentally
removed the wrong ifdef:

 #  define cpu_is_omap730()		1
 # endif
 #endif
+#else
+# if defined(CONFIG_ARCH_OMAP850)
+#  undef  cpu_is_omap850
+#  define cpu_is_omap850()		1
+# endif
+#endif

...

 void omap2_check_revision(void);

 #endif    /* defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) */
-
-#endif

Instead of removing removing the #endif at the end of the file,
the #endif before #else should have been removed.

But we cannot have multiple #else statements as pointed out by
Alistair Buxton <a.j.buxton@gmail.com>. So the fix is to:

- remove the non-multi-omap special handling, as we need to
  detect between omap730 and omap850 anyways.

- add the missing #endif back to the end of the file

Reported-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-05 13:31:43 -07:00
Linus Torvalds
19d031e052 Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: add support for change_pte mmu notifiers
  KVM: MMU: add SPTE_HOST_WRITEABLE flag to the shadow ptes
  KVM: MMU: dont hold pagecount reference for mapped sptes pages
  KVM: Prevent overflow in KVM_GET_SUPPORTED_CPUID
  KVM: VMX: flush TLB with INVEPT on cpu migration
  KVM: fix LAPIC timer period overflow
  KVM: s390: fix memsize >= 4G
  KVM: SVM: Handle tsc in svm_get_msr/svm_set_msr correctly
  KVM: SVM: Fix tsc offset adjustment when running nested
2009-10-05 12:07:39 -07:00
Linus Torvalds
e8d809c613 Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Clear sticky FSR register after saving it to func parametr
  microblaze: UMS is used only for MMU kernel
2009-10-05 12:06:59 -07:00
Linus Torvalds
ef790fe022 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: using HZ needs an include of linux/param.h
  sparc32: convert to asm-generic/hardirq.h
  sparc64: Cache per-cpu %pcr register value in perf code.
  sparc64: Fix comment typo in perf_event.c
  sparc64: Minor coding style fixups in perf code.
  sparc64: Add a basic conflict engine in preparation for multi-counter support.
  sparc64: Increase vmalloc size to fix percpu regressions.
  sparc64: Add initial perf event conflict resolution and checks.
  sparc: Niagara1 perf event support.
  sparc: Add Niagara2 HW cache event support.
  sparc: Support all ultra3 and ultra4 derivatives.
  sparc: Support HW cache events.
2009-10-05 12:06:40 -07:00
Linus Torvalds
46302b46e5 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Don't leak 64-bit kernel register values to 32-bit processes
  x86, SLUB: Remove unused CONFIG FAST_CMPXCHG_LOCAL
  x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg
  x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
  x86: Fix csum_ipv6_magic asm memory clobber
  x86: Optimize cmpxchg64() at build-time some more
2009-10-05 12:02:18 -07:00
Linus Torvalds
5b1755f23b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: fix rename of pt_regs offset defines breakage
  m68knommu: remove duplicated #include
  m68knommu: show KiB rather than pages in "Freeing initrd memory:" message
2009-10-05 11:56:55 -07:00
Artem Bityutskiy
ee894b18e0 OMAP3: PM: introduce a new powerdomain walk helper
The 'pwrdm_for_each()' function walks powerdomains with a spinlock
locked, so the the callbacks cannot do anything which may sleep.
This patch introduces a 'pwrdm_for_each_nolock()' helper which does
the same, but without the spinlock locked. This fixes the following
lockdep warning:

[    0.000000] WARNING: at kernel/lockdep.c:2460 lockdep_trace_alloc+0xac/0xec()
[    0.000000] Modules linked in:
(unwind_backtrace+0x0/0xdc) from [<c0045464>] (warn_slowpath_common+0x48/0x60)
(warn_slowpath_common+0x48/0x60) from [<c0067dd4>] (lockdep_trace_alloc+0xac/0xec)
(lockdep_trace_alloc+0xac/0xec) from [<c009da14>] (kmem_cache_alloc+0x1c/0xd0)
(kmem_cache_alloc+0x1c/0xd0) from [<c00b21d8>] (d_alloc+0x1c/0x1a4)
(d_alloc+0x1c/0x1a4) from [<c00a887c>] (__lookup_hash+0xd8/0x118)
(__lookup_hash+0xd8/0x118) from [<c00a9f20>] (lookup_one_len+0x84/0x94)
(lookup_one_len+0x84/0x94) from [<c010d12c>] (debugfs_create_file+0x8c/0x20c)
(debugfs_create_file+0x8c/0x20c) from [<c010d320>] (debugfs_create_dir+0x1c/0x20)
(debugfs_create_dir+0x1c/0x20) from [<c000e8cc>] (pwrdms_setup+0x60/0x90)
(pwrdms_setup+0x60/0x90) from [<c002e010>] (pwrdm_for_each+0x30/0x80)
(pwrdm_for_each+0x30/0x80) from [<c000e79c>] (pm_dbg_init+0x7c/0x14c)
(pm_dbg_init+0x7c/0x14c) from [<c00232b4>] (do_one_initcall+0x5c/0x1b8)
(do_one_initcall+0x5c/0x1b8) from [<c00083f8>] (kernel_init+0x90/0x10c)
(kernel_init+0x90/0x10c) from [<c00242c4>] (kernel_thread_exit+0x0/0x8)

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:51:00 -07:00
Kevin Hilman
eb350f74eb OMAP3: PM: Enable GPIO module-level wakeups
Currently, only GPIOs in the wakeup domain (GPIOs in bank 0) are
enabled as wakups.  This patch also enables GPIOs in the PER
powerdomain (banks 2-6) to be used as possible wakeup sources.

In addition, this patch ensures that all GPIO wakeups can wakeup
the MPU using the PM_MPUGRPSEL_<pwrdm> registers.

NOTE: this doesn't enable the individual GPIOs as wakeups, this simply
enables the per-bank wakeups at the powerdomain level.

This problem was discovered by Mike Chan when preventing the CORE
powerdomain from going into retention/off.  When CORE was allowed to
hit retention, GPIO wakeups via IO pad were working fine, but when
CORE remained on, GPIO module-level wakeups were not working properly.

To test, prevent CORE from going inactive/retention/off, thus
preventing the IO chain from being armed:

  # echo 3 > /debug/pm_debug/core_pwrdm/suspend

This ensures that GPIO wakeups happen via module-level wakeups and
not via IO pad.

Tested on 3430SDP using the touchscreen GPIO (gpio 2, in WKUP)
Tested on Zoom2 using the QUART interrup GPIO  (gpio 102, in PER)

Also, c.f. OMAP PM wiki for troubleshooting GPIO wakeup issues:
http://elinux.org/OMAP_Power_Management

Reported-by: Mike Chan <mikechan@google.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:51:00 -07:00
Vikram Pandita
71a8077573 OMAP3: PM: USBHOST: clear wakeup events on both hosts
USBHOST module has 2 fclocks (for HOST1 and HOST2), only one iclock
and only a single bit in the WKST register to indicate a wakeup event.

Because of the single WKST bit, we cannot know whether a wakeup event
was on HOST1 or HOST2, so enable both fclocks before clearing the
wakeup event to ensure both hosts can properly clear the event.

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:51:00 -07:00
Paul Walmsley
8cb0ac999f OMAP3: PM: PRCM interrupt: only handle selected PRCM interrupts
Clearing wakeup sources is now only done when the PRM indicates a
wakeup source interrupt.  Since we don't handle any other types of
PRCM interrupts right now, warn if we get any other type of PRCM
interrupt.  Either code needs to be added to the PRCM interrupt
handler to react to these, or these other interrupts should be masked
off at init.

Updated after Jon Hunter's PRCM IRQ rework by Kevin Hilman.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:51:00 -07:00
Paul Walmsley
5d80597801 OMAP3: PM: PRCM interrupt: check MPUGRPSEL register
PM_WKST register contents should be ANDed with the contents of the
MPUGRPSEL registers.  Otherwise the MPU PRCM interrupt handler could
wind up clearing wakeup events meant for the IVA PRCM interrupt
handler. A future revision to this code should be to read a cached
version of MPUGRPSEL from the powerdomain code, since PRM reads are
relatively slow.

Updated after Jon Hunter's PRCM IRQ change by Kevin Hilman

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:50:59 -07:00
Jon Hunter
77da2d910a OMAP3: PM: Prevent hang in prcm_interrupt_handler
There are two scenarios where a race condition could result in a hang
in the prcm_interrupt handler. These are:

1). Waiting for PRM_IRQSTATUS_MPU register to clear.
Bit 0 of the PRM_IRQSTATUS_MPU register indicates that a wake-up event
is pending for the MPU. This bit can only be cleared if the all the
wake-up events latched in the various PM_WKST_x registers have been
cleared. If a wake-up event occurred during the processing of the prcm
interrupt handler, after the corresponding PM_WKST_x register was
checked but before the PRM_IRQSTATUS_MPU was cleared, then the CPU
would be stuck forever waiting for bit 0 in PRM_IRQSTATUS_MPU to be
cleared.

2). Waiting for the PM_WKST_x register to clear.
Some power domains have more than one wake-up source. The PM_WKST_x
registers indicate the source of a wake-up event and need to be cleared
after a wake-up event occurs. When the PM_WKST_x registers are read and
before they are cleared, it is possible that another wake-up event
could occur causing another bit to be set in one of the PM_WKST_x
registers. If this did occur after reading a PM_WKST_x register then
the CPU would miss this event and get stuck forever in a loop waiting
for that PM_WKST_x register to clear.

This patch address the above race conditions that would result in a
hang.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:50:59 -07:00
Imre Deak
1d2127123d ARM: 5742/1: ARM: add debug check for invalid kernel page faults
According to the following in arch/arm/mm/fault.c page faults from
kernel mode are invalid if mmap_sem is already held and there is
no exception handler defined for the faulting instruction:

/*
 * As per x86, we may deadlock here.  However, since the kernel only
 * validly references user space from well defined areas of the code,
 * we can bug out early if this is from code which shouldn't.
 */
if (!down_read_trylock(&mm->mmap_sem)) {
	if (!user_mode(regs) && !search_exception_tables(regs->ARM_pc))
		goto no_context;

Since mmap_sem can be held at arbitrary times by another thread this
also means that any page faults from kernel mode are invalid if no
exception handler is defined for them, regardless whether mmap_sem is
held at the time of fault.

To easier detect code that can trigger the above error, add a check
also for the case where mmap_sem is acquired. As this has an overhead
make it a VM debug check.

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-05 17:55:55 +01:00
Michal Simek
131e4e97bf microblaze: Clear sticky FSR register after saving it to func parametr
Previous patch d63678d607d0e37ec7abe5ceb545d7e8aab956a4 clear
it for noMMU kernel. This one do it for MMU.

Correct noMMU version

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-10-05 11:37:47 +02:00
Michal Simek
f1ae3f6918 microblaze: UMS is used only for MMU kernel
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-10-05 11:37:47 +02:00
Stephen Rothwell
c4a57435db sparc: using HZ needs an include of linux/param.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-05 00:46:08 -07:00
Kuninori Morimoto
9c472c4dd8 sh: mach-ecovec24: Document DS2 switch settings.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-05 10:59:22 +09:00
Izik Eidus
3da0dd433d KVM: add support for change_pte mmu notifiers
this is needed for kvm if it want ksm to directly map pages into its
shadow page tables.

[marcelo: cast pfn assignment to u64]

Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 17:04:53 +02:00
Izik Eidus
1403283acc KVM: MMU: add SPTE_HOST_WRITEABLE flag to the shadow ptes
this flag notify that the host physical page we are pointing to from
the spte is write protected, and therefore we cant change its access
to be write unless we run get_user_pages(write = 1).

(this is needed for change_pte support in kvm)

Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 17:04:50 +02:00
Izik Eidus
acb66dd051 KVM: MMU: dont hold pagecount reference for mapped sptes pages
When using mmu notifiers, we are allowed to remove the page count
reference tooken by get_user_pages to a specific page that is mapped
inside the shadow page tables.

This is needed so we can balance the pagecount against mapcount
checking.

(Right now kvm increase the pagecount and does not increase the
mapcount when mapping page into shadow page table entry,
so when comparing pagecount against mapcount, you have no
reliable result.)

Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 17:04:48 +02:00
Avi Kivity
6a54435560 KVM: Prevent overflow in KVM_GET_SUPPORTED_CPUID
The number of entries is multiplied by the entry size, which can
overflow on 32-bit hosts.  Bound the entry count instead.

Reported-by: David Wagner <daw@cs.berkeley.edu>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-10-04 17:04:16 +02:00
Marcelo Tosatti
eb5109e311 KVM: VMX: flush TLB with INVEPT on cpu migration
It is possible that stale EPTP-tagged mappings are used, if a
vcpu migrates to a different pcpu.

Set KVM_REQ_TLB_FLUSH in vmx_vcpu_load, when switching pcpus, which
will invalidate both VPID and EPT mappings on the next vm-entry.

Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 13:57:24 +02:00
Aurelien Jarno
b2d83cfa3f KVM: fix LAPIC timer period overflow
Don't overflow when computing the 64-bit period from 32-bit registers.

Fixes sourceforge bug #2826486.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 13:57:23 +02:00
Christian Borntraeger
8feda6f786 KVM: s390: fix memsize >= 4G
commit 628eb9b8a8
    KVM: s390: streamline memslot handling

introduced kvm_s390_vcpu_get_memsize. This broke guests >=4G, since this
function returned an int.

This patch changes the return value to a long.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-10-04 13:57:23 +02:00
Joerg Roedel
20824f30bb KVM: SVM: Handle tsc in svm_get_msr/svm_set_msr correctly
When running nested we need to touch the l1 guests
tsc_offset. Otherwise changes will be lost or a wrong value
be read.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 13:57:23 +02:00
Joerg Roedel
77b1ab1732 KVM: SVM: Fix tsc offset adjustment when running nested
When svm_vcpu_load is called while the vcpu is running in
guest mode the tsc adjustment made there is lost on the next
emulated #vmexit. This causes the tsc running backwards in
the guest. This patch fixes the issue by also adjusting the
tsc_offset in the emulated hsave area so that it will not
get lost.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-04 13:57:22 +02:00
Linus Torvalds
8a0382f6fc Merge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev
* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
  m32r: Fix IPI function calls for SMP
  m32r: Fix set_memory() for DISCONTIGMEM
  m32r: add rtc_lock variable
  m32r: define ioread* and iowrite* macros
  m32r: export delay loop symbols
  m32r: fix tme_handler
2009-10-03 21:57:06 -07:00
Toshihiro HANAWA
0a3d31b79e m32r: Fix IPI function calls for SMP
This patch fixes the m32r SMP kernel after 2.6.27.

A part of the following patch breaks m32r SMP operation.
> m32r: convert to generic helpers for IPI function calls
> commit 7b7426c8a6

In the above patch, a CALL_FUNC_SINGLE_IPI was newly introduced,
but the its IPI vector number was wrong in the patch code.

The m32r SMP kernel hanged-up during boot operation, because
the CPU_BOOT_IPI was called instead of CALL_FUNC_SINGLE_IPI
(CPU_BOOT_IPI had no side effect at that time because the 2nd
core had already been started up),
as a result, csd_unlock() was not called, then a dead lock
occurred in csd_lock_wait() after the detection of Compact Flash
memory as IDE generic disk.

Signed-off-by: Toshihiro HANAWA <hanawa@ccs.tsukuba.ac.jp>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:37 +09:00
Hirokazu Takata
6b6fabce5a m32r: Fix set_memory() for DISCONTIGMEM
In case CONFIG_DISCONTIGMEM is set, the memory size of system was
always determined by CONFIG_MEMORY_SIZE and was not changeable.

This patch fixes set_memory() of arch/m32r/mm/discontig.c so that
we can specify memory size by the "mem=<size>" kernel parameter.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:36 +09:00
Hirokazu Takata
bac33bd571 m32r: add rtc_lock variable
Add a spinlock variable "rtc_lock".
This is taken from arch/arm/kernel/time.c.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:36 +09:00
Hirokazu Takata
d2c5821c5d m32r: define ioread* and iowrite* macros
Define ioread* and iowrite* macros to fix the following build errors:

  CC [M]  drivers/uio/uio_smx.o
drivers/uio/uio_smx.c: In function 'smx_handler':
drivers/uio/uio_smx.c:31: error: implicit declaration of function 'ioread32'
drivers/uio/uio_smx.c:37: error: implicit declaration of function 'iowrite32'

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:36 +09:00
Hirokazu Takata
ced0f005c7 m32r: export delay loop symbols
- Move EXPORT_SYMBOL lines of delay loop functions
  from arch/m32r/kernel/m32r_ksyms.c to arch/m32r/lib/delay.c.
- Export __ndelay.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:36 +09:00
Hirokazu Takata
2cff5e1a83 m32r: fix tme_handler
Fix pmd_bad check code of tme_handler (TLB Miss Exception handler).
The correct _KERNPG_TABLE value is not 0x263(=611) but 0x163.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-10-04 12:02:35 +09:00
Marin Mitov
e3be785fb5 x86, pci: Correct spelling in a comment
Signed-off-by: Marin Mitov <mitov@issp.bas.bg>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
LKML-Reference: <200910032045.02523.mitov@issp.bas.bg>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
======================================================
2009-10-03 20:35:16 +02:00
Linus Torvalds
a037a79dce Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits)
  ARM: 5728/1: Proper prefetch abort handling on ARMv6 and ARMv7
  ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()
  ARM: 5740/1: fix valid_phys_addr_range() range check
  ARM: 5739/1: ARM: allow empty ATAG_CORE
  ARM: 5735/1: sa1111: CodingStyle cleanups
  ARM: 5738/1: Correct TCM documentation
  ARM: 5734/1: arm: fix compilation of entry-common.S for older CPUs
  ARM: 5733/1: fix bcmring compile error
  ARM: 5732/1: remove redundant include file
  ARM: 5731/2: Fix U300 generic GPIO, remove ifdefs from MMCI v3
  ARM: Ensure do_cache_op takes mmap_sem
  ARM: Fix __cpuexit section mismatch warnings
  ARM: Don't allow highmem on SMP platforms without h/w TLB ops broadcast
  ARM: includecheck fix: mach-davinci, board-dm365-evm.c
  ARM: Remove unused CONFIG SA1100_H3XXX
  ARM: Fix warning: unused variable 'highmem'
  ARM: Fix warning: #warning syscall migrate_pages not implemented
  ARM: Fix SA11x0 clocksource warning
  ARM: Fix SA1100 Neponset serial section mismatch
  ARM: Fix SA1100 Assabet/Neponset PCMCIA section mismatch warnings
  ...
2009-10-02 16:20:43 -07:00
Kirill A. Shutemov
d25ef8b86e ARM: 5728/1: Proper prefetch abort handling on ARMv6 and ARMv7
Currently, on ARMv6 and ARMv7, if an application tries to execute
code (or garbage) on non-executable page it hangs. It caused by
incorrect prefetch abort handling. Now every prefetch abort
processes as a translation fault.

To fix this we have to analyze instruction fault status register
to figure out reason why we've got the abort and process it
accordingly.

To make IFSR different from DFSR we set bit 31 which is reserved in
both IFSR and DFSR.

This patch also tries to protect from future hangs on unexpected
exceptions. An application will be killed if unexpected exception
type was received.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-02 22:34:32 +01:00
Kirill A. Shutemov
4fb2847437 ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()
Instruction fault status register, IFSR, was introduced on ARMv6 to
provide status information about the last insturction fault. It
needed for proper prefetch abort handling.

Now we have three prefetch abort model:

  * legacy - for CPUs before ARMv6. They doesn't provide neither
    IFSR nor IFAR. We simulate IFSR with section translation fault
    status for them to generalize code;
  * ARMv6 - provides IFSR, but not IFAR;
  * ARMv7 - provides both IFSR and IFAR.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-02 22:34:32 +01:00
Greg Ungerer
6806bfe18f ARM: 5740/1: fix valid_phys_addr_range() range check
Commit 1522ac3ec9
("Fix virtual to physical translation macro corner cases")
breaks the end of memory check in valid_phys_addr_range().
The modified expression results in the apparent /dev/mem size
being 2 bytes smaller than what it actually is.

This patch reworks the expression to correctly check the address,
while maintaining use of a valid address to __pa().

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-02 22:32:34 +01:00
David Brown
31abdb7441 ARM: 5739/1: ARM: allow empty ATAG_CORE
From: David Brown <davidb@quicinc.com>

The ATAG_CORE is allowed to be empty.  Although this is handled
by parse_tag_core(), __vet_atags during startup rejects this tag
unless it contains data.  Allow the initial tag to be either the
full size, or empty.

Signed-off-by: David Brown <davidb@quicinc.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-02 22:32:34 +01:00
Hartley Sweeten
0a4bc5e89c ARM: 5735/1: sa1111: CodingStyle cleanups
EXPORT_* macros should follow immediately after the closing function
brace line.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-02 22:32:33 +01:00
Russell King
534d0c92cf Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/xscaleiop
Conflicts:
	MAINTAINERS
2009-10-02 22:31:04 +01:00
Arjan van de Ven
11879ba5d9 x86: Simplify bound checks in the MTRR code
The current bound checks for copy_from_user in the MTRR driver are
not as obvious as they could be, and gcc agrees with that.

This patch simplifies the boundary checks to the point that gcc can
now prove to itself that the copy_from_user() is never going past
its bounds.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <20090926205150.30797709@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-02 19:51:56 +02:00
Ingo Molnar
f436f8bb73 x86: EDAC: MCE: Fix MCE decoding callback logic
Make decoding of MCEs happen only on AMD hardware by registering a
non-default callback only on CPU families which support it.

While looking at the interaction of decode_mce() with the other MCE
code i also noticed a few other things and made the following
cleanups/fixes:

 - Fixed the mce_decode() weak alias - a weak alias is really not
   good here, it should be a proper callback. A weak alias will be
   overriden if a piece of code is built into the kernel - not
   good, obviously.

 - The patch initializes the callback on AMD family 10h and 11h.

 - Added the more correct fallback printk of:

	No support for human readable MCE decoding on this CPU type.
	Transcribe the message and run it through 'mcelog --ascii' to decode.

   On CPUs that dont have a decoder.

 - Made the surrounding code more readable.

Note that the callback allows us to have a default fallback -
without having to check the CPU versions during the printout
itself. When an EDAC module registers itself, it can install the
decode-print function.

(there's no unregister needed as this is core code.)

version -v2 by Borislav Petkov:

 - add K8 to the set of supported CPUs

 - always build in edac_mce_amd since we use an early_initcall now

 - fix checkpatch warnings

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <20091001141432.GA11410@aftab>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-02 15:42:18 +02:00
Sascha Hauer
de41fddd9e mx25: Add missing copyright / license header
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-02 09:14:18 +02:00
Sascha Hauer
165e10d800 mx25pdk: remove nand support as it is not present in current tree
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-02 09:10:38 +02:00
Sascha Hauer
b02019e6c8 mx25 devices: Add missing include
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-02 09:09:10 +02:00
Sascha Hauer
5cf3bcdada i.MX27 clock: rename spi clocks to match device
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-02 09:03:47 +02:00
Ben Dooks
00acfaeead s3cmci: add better support for no card detect or write protect available
Add better support for omitting either the card detect or the write
protect GPIOs if the board does not support it.  Add the fields
no_wprotect and no_detect to the platform data which when set indicate the
absence of the respective GPIOs.

Note, this also fixes a minor bug where it tries to free IRQ0 if there is
no detect gpio available.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:15 -07:00
Ben Dooks
26f14947db s3cmci: Kconfig selection for PIO/DMA/Both
Add a selection for the data transfer mode of the s3cmci driver, allowing
for either a configuration or rumtime selection of the use of the DMA or
PIO transfer code.

The PIO only mode is 476 bytes smaller than the driver with both methods
compiled in.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:15 -07:00
Samuel Thibault
392d814daf x86: fix csum_ipv6_magic asm memory clobber
Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a
memory clobber, as it is only passed the address of the buffer, not a
memory reference to the buffer itself.

This caused failures in Hurd's pfinetv4 when we tried to compile it with
gcc-4.3 (bogus checksums).

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:12 -07:00
Mark Salter
d22a001bf6 mn10300: fix kernel build failures when using gcc-4.x
Fix some build failures when using gcc-4.x for MN10300.

Firstly, __get_user() fails to build because the pointer points to a const and
__gu_val ends up being read-only:

In file included from include/linux/mempolicy.h:62,
                 from init/main.c:50:
include/linux/pagemap.h: In function 'fault_in_pages_readable':
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
make[1]: *** [init/main.o] Error 1

Secondly, gcc-4 doesn't allow casts of lvalues:

  UPD     include/linux/compile.h
arch/mn10300/kernel/rtc.c: In function 'calibrate_clock':
arch/mn10300/kernel/rtc.c:170: error: lvalue required as left operand of assignment
arch/mn10300/kernel/rtc.c:172: error: lvalue required as left operand of assignment
make[1]: *** [arch/mn10300/kernel/rtc.o] Error 1

These are seen with gcc 4.2.1.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:12 -07:00
Andrew Morton
a28b3dc909 revert "m68k: convert to asm-generic/hardirq.h"
Revert 45d80eea87 ("m68k: convert to
asm-generic/hardirq.h") - it fails to compile due to an inclusion tangle:

In file included from include/linux/irq.h:12,
                 from include/asm-generic/hardirq.h:6,
                 from /usr/src/devel/arch/m68k/include/asm/hardirq_mm.h:6,
                 from /usr/src/devel/arch/m68k/include/asm/hardirq.h:4,
                 from include/linux/hardirq.h:10,
                 from /usr/src/devel/arch/m68k/include/asm/system_mm.h:69,
                 from /usr/src/devel/arch/m68k/include/asm/system.h:4,
                 from include/linux/list.h:7,
                 from include/linux/preempt.h:11,
                 from include/linux/spinlock.h:50,
                 from include/linux/seqlock.h:29,
                 from include/linux/time.h:8,
                 from include/linux/timex.h:56,
                 from include/linux/sched.h:56,
                 from arch/m68k/kernel/asm-offsets.c:14:
include/linux/smp.h:17: error: field 'list' has incomplete type

Cc: Christoph Hellwig <hch@lst.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:11 -07:00
Alexey Dobriyan
828c09509b const: constify remaining file_operations
[akpm@linux-foundation.org: fix KVM]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:11 -07:00
Christoph Hellwig
c416850580 sparc32: convert to asm-generic/hardirq.h
From: Christoph Hellwig <hch@lst.de>

[akpm@linux-foundation.org: /arch/sparc/include/asm/irq_32.h: move NR_IRQS definition]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-01 13:45:13 -07:00
Dmitry Artamonow
6176d39471 ARM: 5734/1: arm: fix compilation of entry-common.S for older CPUs
Commit 181f817eaa introduced some new code to entry-common.S
Sadly, this new code uses 'bx' instruction which is available only on
ARMv5 and higher CPUs. This causes following compilation errors when
building kernel for StrongARM (ARMv4):

arch/arm/kernel/entry-common.S: Assembler messages:
arch/arm/kernel/entry-common.S:129: Error: selected processor does not
 support `bx ip'
arch/arm/kernel/entry-common.S:138: Error: selected processor does not
 support `bx ip'

Fix these errors by using 'mov pc' instead of 'bx'.

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-01 16:26:16 +01:00
Leo Chen
ca6cfa8346 ARM: 5733/1: fix bcmring compile error
The movement of the MMCI header file made bcmring break. It turns
out it was including asm/mmc.h without using it so fixing the
problem boils down to removing the offending include.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-01 16:26:16 +01:00
Leo Chen
5950bd3897 ARM: 5732/1: remove redundant include file
Remove duplicated #include('s) in arch/arm/mach-bcmring/core.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-01 16:26:15 +01:00
Linus Walleij
ee17962e24 ARM: 5731/2: Fix U300 generic GPIO, remove ifdefs from MMCI v3
The #ifdefs in the MMCI driver were erroneous and just masking
a bug in the U300 generic GPIO implementation. This removes the
ifdefs and fixes the U300 generic GPIO instead.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-01 16:26:15 +01:00
Jan Beulich
24e35800cd x86: Don't leak 64-bit kernel register values to 32-bit processes
While 32-bit processes can't directly access R8...R15, they can
gain access to these registers by temporarily switching themselves
into 64-bit mode.

Therefore, registers not preserved anyway by called C functions
(i.e. R8...R11) must be cleared prior to returning to user mode.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: <stable@kernel.org>
LKML-Reference: <4AC34D73020000780001744A@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 11:24:26 +02:00
Jaswinder Singh Rajput
4701472e44 x86, SLUB: Remove unused CONFIG FAST_CMPXCHG_LOCAL
Remove unused CONFIG FAST_CMPXCHG_LOCAL from Kconfig.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: linux-mm@kvack.org
LKML-Reference: <1253981501.4568.61.camel@ht.satnam>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 10:59:08 +02:00
Jason Wessel
ea3acb199a x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg
Commit c953094 ("early_printk: Allow more than one early console")
introduced a regression in the parsing of the earlyprintk= kernel
arguments.

If you specify "earlyprintk=serial,ttyS0,115200" as a kernel
argument, the "serial,ttyS" should be parsed as a single argument
and not as "serial" and then "ttyS".

Also update the documentation to reflect you can specify the ttyS
directly without the "serial" argument.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
LKML-Reference: <4ABB7D5E.6000301@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 10:34:16 +02:00
Eric Dumazet
04edbdef02 x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
Conditionaly compile cmpxchg8b_emu.o and EXPORT_SYMBOL(cmpxchg8b_emu).

This reduces the kernel size a bit.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AC43E7E.1000600@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 08:42:24 +02:00
Samuel Thibault
d1716a60a8 x86: Fix csum_ipv6_magic asm memory clobber
Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a
memory clobber, as it is only passed the address of the buffer, not a
memory reference to the buffer itself.

This caused failures in Hurd's pfinetv4 when we tried to compile it with
gcc-4.3 (bogus checksums).

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 08:11:26 +02:00
Linus Torvalds
982d007a6e x86: Optimize cmpxchg64() at build-time some more
Try to avoid the 'alternates()' code when we can statically
determine that cmpxchg8b is fine. We already have that
CONFIG_x86_CMPXCHG64 (enabled by PAE support), and we could easily
also enable it for some of the CPU cases.

Note, this patch only adds CMPXCHG8B for the obvious Intel CPU's,
not for others. (There was something really messy about cmpxchg8b
and clone CPU's, so if you enable it on other CPUs later, do it
carefully.)

If we avoid that asm-alternative thing when we can assume the
instruction exists, we'll generate less support crud, and we'll
avoid the whole issue with that extra 'nop' for padding instruction
sizes etc.

LKML-Reference: <alpine.LFD.2.01.0909301743150.6996@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 08:01:08 +02:00