Commit graph

574 commits

Author SHA1 Message Date
Kumar Gala
e16fa6b9d2 [PATCH] ppc32: Fix an off-by-one error in ipic_init
There is an off-by-one error in the IPIC code that configures the
external interrupts (Edge or Level Sensitive).

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-23 10:58:31 -07:00
Benjamin Herrenschmidt
1263cc67c0 [PATCH] ppc64: Fix booting on latest G5 models
The latest speedbumped Apple G5 models have a "bug" in the Open Firmware
device tree that lacks the proper interrupt routing information for the
northbridge i2c controller.  Apple's driver silently falls back into a
sub-optimal "polled" mode (heh, maybe they didn't even notice the bug
because of that :), our driver didn't properly check and crashes :(

This patch fixes our driver to not crash, and adds code to the
prom_init() OF trampoline code that detects the "bug" and adds the
missing information back for this chipset revision.  This fixes booting
and thermal control on these models.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-22 17:34:42 -07:00
Russell King
791be9b976 [PATCH] ARM SMP: add IPI support
Add support for inter-processor interrupts to the main IRQ
handling code.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-21 18:16:44 +01:00
Russell King
706fdd9faa [PATCH] ARM SMP: reallocate main IRQ handler code registers
By changing r9 -> r8 and r8 to 'tsk' (r9) we are able to remove
one instruction from the preempt path.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-21 18:15:45 +01:00
Russell King
187a51ad11 [PATCH] ARM SMP: consolidate main IRQ handler code
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-21 18:14:44 +01:00
Andi Kleen
2df9fa3664 [PATCH] x86_64: i386/x86-64: Export cpu_core_map
Needed for the powernow k8 driver for dual core support.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: <mark.langsdorf@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen
14d98cad82 [PATCH] x86_64: Add option to disable timer check
This works around the too fast timer seen on some ATI boards.

I don't feel confident enough about it yet to enable it by default, but give
users the option.

Patch and debugging from Christopher Allen Wing <wingc@engin.umich.edu>, with
minor tweaks (renamed the option and documented it)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen
607a168583 [PATCH] x86_64: Fix 32bit system call restart
The test case at
http://cvs.sourceforge.net/viewcvs.py/posixtest/posixtestsuite/conforman
ce/interfaces/clock_nanosleep/1-5.c fails if it runs as a 32bit process on
x86_86 machines.

The root cause is the sub 32bit process fails to restart the syscall after it
is interrupted by a signal.

The syscall number of sys_restart_syscall in table sys_call_table is
__NR_restart_syscall (219) while it's __NR_ia32_restart_syscall
(0) in ia32_sys_call_table. When regs->rax==(unsigned
long)-ERESTART_RESTARTBLOCK, function do_signal doesn't distinguish if
the process is 64bit or 32bit, and always sets restart syscall number
as __NR_restart_syscall (219).

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen
4057923614 [PATCH] i386: Fix race in iounmap
We need to hold the vmlist_lock while doing change_page_attr, otherwise we
could reset someone else's mapping.

Requires previous patch to add __remove_vm_area

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen
7856dfeb23 [PATCH] x86_64: Fixed guard page handling again in iounmap
Caused oopses again.  Also fix potential mismatch in checking if
change_page_attr was needed.

To do it without races I needed to change mm/vmalloc.c to export a
__remove_vm_area that does not take vmlist lock.

Noticed by Terence Ripperda and based on a patch of his.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen
c4d1fcf3a2 [PATCH] x86_64: Don't allow accesses below register frame in ptrace
There was a "off by one quad word" error in there.  I don't think it is
exploitable because it will only store into a unused area, but better to plug
it.

Found and fixed by John Blackwood

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen
b41e29398a [PATCH] x86_64: 386/x86-64 Further AMD dual core fixes
- Remove duplicated ifdef
- Make core_id match what Intel uses
- Initialize phys_proc_id correctly for non DC case
- Handle non power of two core numbers.

Fixes for both i386 and x86-64

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Matt Porter
b2665f92ae [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 44x
This patch fixed CONFIG_TASK_SIZE handling on 44x.  Currently head_44x.S
hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE
(e.g.  for 3G user-space).  Tested on Ocotea in 3G/1G configuration.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Kumar Gala
7f8cd80fb2 [PATCH] ppc32: Fix platform device initialization of 8250 serial ports
Initialization of 8250 serial ports that are platform devices require that
at empty entry exists in the array of plat_serial8250_port.  With out an
empty entry we can get some pretty random behavior.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Jeff Dike
84ddaa8c86 [PATCH] uml: Change printf to printk in console driver
From: Al Viro - we have error messages with KERN_ERR in them, so they
should be printk-ed rather than printf-ed.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Jeff Dike
12f49643bc [PATCH] uml: fixrange_init 3-level page table support
From: Al Viro - add three-level page table support to fixrange_init.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike
7b9014c1da [PATCH] uml: Remove ubd-mmap support
Finally rip out the ubd-mmap code, which turned out to be broken by design.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike
9b67a3c4cd [PATCH] uml: initrd cleanup
The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all systemcalls from initrd_user.c file under os-Linux dir and join
initrd_user.c and initrd_kern.c files in new file initrd.c

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike
41a9cf8ebe [PATCH] uml: Export clear_user_*
From: Oleg Drokin: This patch is needed to support kernel modules that want to
use clear_user() (that is exported symbol on all other architectures).

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike
7c00c31fc0 [PATCH] uml: multicast driver cleanup
Byte-swapping of the port and IP address passed in to the multicast driver by
the user used to happen in different places, which was a bug in itself.  The
port also was swapped before being printk-ed, which led to a misleading
message.  This patch moves the port swapping to the same place as the IP
address swapping.  It also cleans up the error paths of mcast_open.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike
060e352236 [PATCH] uml: Delay loop cleanups
This patch cleans up the delay implementations a bit, makes the loops
unoptimizable, and exports __udelay and __const_udelay.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike
13479d52c7 [PATCH] uml: Page fault fixes
Any access to a PROT_NONE page should segfault the process.  A JVM seems to do
this on purpose.  Also, Al noticed some bogus code, which is now deleted.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike
ba9950c820 [PATCH] uml: small fixes left over from rc4
Some changes that I sent in didn't make 2.6.12-rc4 for some reason.  This
adds them back.  We have
	an x86_64 definition of TOP_ADDR
	a reimplementation of the x86_64 csum_partial_copy_from_user
	some syntax fixes in arch/um/kernel/ptrace.c
	removal of a CFLAGS definition in the x86_64 Makefile
	some include changes in the x86_64 ptrace.c and user-offsets.h
	a syntax fix in elf-x86_64.h
Also moved an include in the i386 and x86_64 Makefiles to make the symlinks
work, and some small fixes from Al Viro.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Linus Torvalds
1c7878f024 Remove some left-over empty files
Hopefully the addition of -E to my applypatch script
will mean that I won't have these kinds of leftovers
in the future.
2005-05-20 13:36:19 -07:00
David S. Miller
a228dfd5dc [SPARC64]: Fix bad performance side effect of strbuf timeout changes.
The recent change to add a timeout to strbuf flushing had
a negative performance impact.  The udelay()'s are too long,
and they were done in the wrong order wrt. the register read
checks.  Fix both, and things are happy again.

There are more possible improvements in this area.  In fact,
PCI streaming buffer flushing seems to be part of the bottleneck
in network receive performance on my SunBlade1000 box.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-20 11:40:32 -07:00
Paul Mackerras
45fed46f5b [PATCH] ppx32: Fix uninitialized variable in set_preferred_console
This fixes an uninitialized variable warning in arch/ppc/kernel/setup.c,
and this time gcc is actually right, there is a path that could result
in offset being uninitialized.  Zero is a sane default in this instance.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:11 -07:00
Paul Mackerras
72480ef863 [PATCH] ppc32: Fix __copy_tofrom_user return value
Recently the __copy_tofrom_user routine was modified to avoid doing
prefetches past the end of the source array.  However, in doing so we
introduced a bug in that it now returns the wrong value for the number
of bytes not copied when a fault is encountered.  This fixes it to
return the correct number.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras
3207a80a6e [PATCH] ppc32: remove unused computation
We are computing phys in the code below and never using.  This patch
takes out the redundant computation.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras
6c37a88c5b [PATCH] ppc32: don't call progress functions after boot
On ppc32, the platform code can supply a "progress" function that is
used to show progress through the boot.  These functions are usually
in an init section and so can't be called after the init pages are
freed.  Now that the cpu bringup code can be called after the system
is booted (for hotplug cpu) we can get the situation where the
progress function can be called after boot.  The simple fix is to set
the progress function pointer to NULL when the init pages are freed,
and that is what this patch does (note that all callers already check
whether the function pointer is NULL before trying to call it).

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Linus Torvalds
66e60f9251 Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6.git/ 2005-05-19 15:31:18 -07:00
David Woodhouse
7063e6c717 Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-19 11:54:00 +01:00
Tony Luck
fe12e25ebd [IA64] initialize spinlock pfm_alt_install_check
I applied the penultimate version of the perfmon patch, which didn't have
the initialization of the new spinlock that was added.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-18 17:09:06 -07:00
Tony Luck
3d620cd755 Sync with Linus - rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-18 16:28:52 -07:00
Tony Luck
a1ecf7f6e6 [IA64] alternate perfmon handler
Patch from Charles Spirakis

Some linux customers want to optimize their applications on the latest
hardware but are not yet willing to upgrade to the latest kernel. This
patch provides a way to plug in an alternate, basic, and GPL'ed PMU
subsystem to help with their monitoring needs or for specialty work. It
can also be used in case of serious unexpected bugs in perfmon. Mutual
exclusion between the two subsystems is guaranteed, hence no conflict
can arise from both subsystem being present.

Acked-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-18 16:14:30 -07:00
Russ Anderson
6872ec5489 [IS64-SGI] Set Altix error handling features
The 2.6 kernel has CPE error thresholding.
This patch lets SAL know of this error handling feature.
The changes are SN specific.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-17 13:53:21 -07:00
Russ Anderson
bb68c12b40 [IA64-SGI] cpe interrupts are not being enabled.
acpi_request_vector() is called in ia64_mca_init() to get the cpe_vector.
The problem is that acpi_request_vector() looks in platform_intr_list[] to 
get the vector, but platform_intr_list[] is not initialized with a valid
vector until later (in sn_setup()).  Without a valid vector the code
defaults to polling mode.

This patch moves the call to acpi_request_vector() from ia64_mca_init()
to ia64_mca_late_init(), which is after platform_intr_list[] is initialized.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-17 12:52:43 -07:00
David Mosberger-Tang
02a017a9f3 [IA64] Correct convert_to_non_syscall()
convert_to_non_syscall() has the same problem that unwind_to_user()
used to have.  Fix it likewise.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-17 12:33:15 -07:00
Christoph Lameter
ff0d2f90fd [PATCH] fix memory scribble in arch/i386/pci/fixup.c
The GET_INDEX() macro should use just the low three bits of the devfn,
otherwise we have a memory scribble in pcie_rootport_aspm_quirk that
overwrites ptype_all

Fix it to be more careful about its arguments while at it.

Acked by Dely Sy <dely.l.sy@intel.com>

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 09:27:05 -07:00
Paul Mackerras
19bbdf0e51 [PATCH] ppc32: enable use of early_param
We need to call parse_early_param() early on to allow usage of
early_param() for command line parsing.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 09:27:05 -07:00
Tony Luck
d0dac8082c Merge with linus 2005-05-17 09:10:20 -07:00
Christoph Hellwig
5418b6925c [PATCH] kill <asm/ioctl32.h>
These days <linux/ioctl32.h> handles everything, no need for an asm
header on just two architectures.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:21 -07:00
Nishanth Aravamudan
24d568ed1b [PATCH] alpha/osf_sys: use helper functions to convert between tv and jiffies
Use helper functions to convert between timeval structure and jiffies
rather than custom logic.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:21 -07:00
Yoichi Yuasa
3407c0fec3 [PATCH] mips: add resource management to pmu
This patch had added resource management to vr41xx's pmu.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:20 -07:00
Andi Kleen
59db2e6ed0 [PATCH] x86_64: Update defconfig
Update defconfig

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:17 -07:00
Andi Kleen
18a2b64712 [PATCH] x86_64: Don't assume BSP has ID 0 in new smp bootup
This patch removes the assumption that LAPIC entries contain the BSP as its
first entry.  This is a slight improvement to the temporary fix submitted by
Suresh Siddha.

- Removes assumption that LAPIC entries contain BSP first.

- Builds x86_acpiid_to_apicid[] and bios_cpu_apicid[] properly with BSP as
  first entry.

- Made maxcpus=1 boot on these systems.  Since the parsing earlier in
  arch/x86_64/kernel/mpparse.c stopped after maxcpus entries, other entries
  were not processed, this causes kernel not to boot on these systems.

TBD: x86_acpiid_to_apicid and bios_cpu_apicid[] seem to be exactly the
     same.  This could be removed, but might need more work to cleanup.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen
751521149a [PATCH] x86_64: Collected NMI watchdog fixes.
Collected NMI watchdog fixes.

- Fix call of check_nmi_watchdog

- Remove earlier move of check_nmi_watchdog to later.  It does not fix the
  race it was supposed to fix fully.

- Remove unused P6 definitions

- Add support for performance counter based watchdog on P4 systems.

  This allows to run it only once per second, which saves some CPU time.
  Previously it would run at 1000Hz, which was too much.

  Code ported from i386

  Make this the default on Intel systems.

- Use check_nmi_watchdog with local APIC based nmi

- Fix race in touch_nmi_watchdog

- Fix bug that caused incorrect performance counters to be programmed in a
  few cases on K8.

- Remove useless check for local APIC

- Use local_t and per_cpu variables for per CPU data.

- Keep other CPUs busy during check_nmi_watchdog to make sure they really
  tick when in lapic mode.

- Only check CPUs that are actually online.

- Various other fixes.

- Fix fallback path when MSRs are unimplemented

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen
f3c5f5e7ee [PATCH] x86_64: Make vsyscall.c compile without CONFIG_SYSCTL
Originally from Matt Tolentino

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Suresh Siddha
376ec33fcb [PATCH] x86_64: Fix OEM hpet check
Use bitmap_zero instead of bitmap_empty to initialise cpu mask This makes it
actually run reliable instead of relying on stack state.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen
3b9ba4d5e2 [PATCH] x86_64: When checking vmalloc mappings don't use pte_page
The PTEs can point to ioremap mappings too, and these are often outside
mem_map.  The NUMA hash page lookup functions cannot handle out of bounds
accesses properly.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen
f6b8d4778c [PATCH] x86_64: Fix canonical checking for segment registers in ptrace
Allowed user programs to set a non canonical segment base, which would cause
oopses in the kernel later.

Credit-to: Alexander Nyberg <alexn@dsv.su.se>

 For identifying and reporting this bug.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen
d1099e8a18 [PATCH] x86_64: check if ptrace RIP is canonical
This works around an AMD Erratum.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen
312df5f1a1 [PATCH] x86_64: Add pmtimer support
There are unfortunately more and more multi processor Opteron systems which
don't have HPET timer support in the southbridge.  This covers in particular
Nvidia and VIA chipsets.  They also don't guarantee that the TSCs are
synchronized between CPUs; and especially with MP powernow the systems are
nearly unusable because the time gets very inconsistent between CPUs.

The timer code for x86-64 was originally written under the assumption that we
could fall back to the HPET timer on such systems.  But this doesn't work
there.

Another alternative is to use the ACPI PM timer as primary time source.  This
patch does that.  The kernel only uses PM timer when there is no other choice
because it has some disadvantages.

Ported over from i386.  It should be faster than the i386 version because I
dropped the "read three times" workaround, but is still considerable slower
than HPET and also does not work together with vsyscalls which have to be
disabled.

Cc: <mark.langsdorf@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen
0af2be0b72 [PATCH] x86_64: Remove unique APIC/IO-APIC ID check
It is unnecessary on modern Intel or AMD systems, and that is all we support
on x86-64

Also causes problems on various systems

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00
Andi Kleen
622dcaf974 [PATCH] x86_64: Don't print the internal k8c+ flag in /proc/cpuinfo
It is not very useful to the user and more an kernel internal implementation
detail.  So hide it.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00
Andi Kleen
2942283e97 [PATCH] x86_64: Remove x86_apicid field
Remove x86_apicid field

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00
Andi Kleen
dda50e716d [PATCH] x86_64: Update TSC sync algorithm
The new TSC sync algorithm recently submitted did not work too well.

The result was that some MP machines where the TSC came up of the BIOS very
unsynchronized and that did not have HPET support were nearly unusable because
the time would jump forwards and backwards between CPUs.

After a lot of research ;-) and some more prototypes I ended up with just
using the one from IA64 which looks best.  It has some internal self tuning
that should adapt to changing interconnect latencies.  It holds up in my tests
so far.

I believe it was originally written by David Mosberger, I just ported it over
to x86-64.  See the inline comment for a description.

This cleans up the code because it uses smp_call_function for syncing instead
of having custom hooks in SMP bootup.

Please note that the cycle numbers it outputs are too optimistic because they
do not take into account the latency of WRMSR and RDTSC, which can be hundreds
of cycles.  It seems to be able to sync a dual Opteron to 200-300 cycles,
which is probably good enough.

There is a timing window during AP bootup where interrupts can see
inconsistent time before the TSC is synced.  It is hard to avoid unfortunately
because we can only do the TSC sync after some setup, and we need to enable
interrupts before that.  I just ignored it for now.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00
Andi Kleen
93ef70a217 [PATCH] x86_64: Don't look up struct page pointer of physical address in iounmap
It could be in a memory hole not mapped in mem_map and that causes the hash
lookup to go off to nirvana.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00
Andi Kleen
a158608bf4 [PATCH] x86_64/i386: fix defaults for physical/core id in /proc/cpuinfo
Last round hopefully of cpu_core_id changes hopefully fow now:

- Always initialize cpu_core_id for all CPUs, even when no dual core setup
  is detected.  This prevents funny /proc/cpuinfo output

- Do the same with phys_proc_id[] even when no HyperThreading - dito.

- Use the CPU APIC-ID from CPUID 1 instead of the linux virtual CPU number
  to identify the core for AMD dual core setups.

Patch for i386/x86-64.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:13 -07:00
Andi Kleen
10ffdbb8d6 [PATCH] x86_64: Readd missing tests in entry.S
Cleans up the system exit call slightly and synchronizes with my tree again.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:13 -07:00
Andi Kleen
ac6b931c44 [PATCH] x86_64: Reduce NMI watchdog stack usage
NR_CPUs can be quite big these days.  kmalloc the per CPU array instead of
putting it onto the stack

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:12 -07:00
Paolo 'Blaisorblade' Giarrusso
8f332287bc [PATCH] uml: change memcpy to memmove
Replace one memcpy() call with overlapping source and dest arguments with
one call to memmove(), to avoid data corruption.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:11 -07:00
David Woodhouse
69887ac1dc Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-17 12:04:46 +01:00
Russell King
8711a1b902 [PATCH] ARM: Fix build error
Mainline kernels don't have VECTORS_HIGH nor COPYPAGE_MINICACHE yet.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-16 23:36:22 +01:00
Ben Dooks
bfd4e0709f [PATCH] ARM: 2678/1: S3C2440 - cpu fixes, hdiv divisors and nand dev name
Patch from Ben Dooks

Fix the setting of hdiv when set to divide-by-2. Thanks to
Jeonghoon Yoon for pointing this out.
Change name of the NAND device to "s3c2440-nand" as it
is not similar enough to the "s3c2410-nand" device.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-12 19:27:14 +01:00
Ben Dooks
4ad3a443c9 [PATCH] ARM: 2677/1: S3C2440 - UPLL frequency doubled
Patch from Ben Dooks

S3C2440 UPLL is the same as the S3C2410 UPLL, it is only the
MPLL which has an extra multiplication factor of 2 in the
multiplier.

Signed-off-by: Ben Dooks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-12 19:27:13 +01:00
Nicolas Pitre
70489c88d0 [PATCH] ARM: 2680/1: refine TLS reg availability some more again
Patch from Nicolas Pitre

Not all ARMv6 processors implement the TLS register.

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-12 19:27:12 +01:00
David S. Miller
4dbc30fb27 [SPARC64]: Add timeouts to streaming buffer synchronization.
If some hardware error occurs and the flush flag never updates,
we will hang forever in these routines.  Add a timeout, and
print out a diagnostic if it is reached.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-11 11:37:00 -07:00
David Mosberger-Tang
bfd6859408 [IA64] Avoid .spillpsp directive in handcoded assembly
Some time ago, GAS was fixed to bring the .spillpsp directive in line
with the Intel assembler manual (there was some disagreement as to
whether or not there is a built-in 16-byte offset).  Unfortunately,
there are two places in the kernel where this directive is used in
handwritten assembly files and those of course relied on the "buggy"
behavior.  As a result, when using a "fixed" assembler, the kernel
picks up the UNaT bits from the wrong place (off by 16) and randomly
sets NaT bits on the scratch registers.  This can be noticed easily by
looking at a coredump and finding various scratch registers with
unexpected NaT values.  The patch below fixes this by using the
.spillsp directive instead, which works correctly no matter what
assembler is in use.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-10 13:52:00 -07:00
Nicolas Pitre
fa4354359f [PATCH] ARM: 2663/2: I can't type
Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-10 17:36:29 +01:00
Russell King
8d802d28c2 [PATCH] ARM: Add V6 aliasing cache flush
Add cache flushing support for aliased V6 caches to
flush_dcache_page.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 17:31:43 +01:00
Russell King
08ee4e4c5f [PATCH] ARM: Use top_pmd for V6 copy/clear user_page
Remove needless page table walking for v6 page operations.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 17:30:47 +01:00
Russell King
d2bab05ac1 [PATCH] ARM: Move copy/clear user_page locking into implementation
Move the locking for copy_user_page() and clear_user_page() into
the implementations which require locking.  For simple memcpy/
memset based implementations, the locking is extra overhead which
is not necessary, and prevents preemption occuring.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 14:23:01 +01:00
Russell King
c4e1f6f6bf [PATCH] ARM: Add top_pmd, which points at the top-most page table
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 10:40:19 +01:00
Tony Luck
a84f577017 Merge with /home/aegl/GIT/linus 2005-05-09 16:44:53 -07:00
Russell King
155bb14482 [PATCH] ARM: Add inline functions to find the pmd from virtual address
Add pmd_off() and pmd_off_k() to obtain the pmd pointer for a
virtual address, and use them throughout the mm initialisation.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-09 20:52:51 +01:00
David Mosberger-Tang
66302f211a [IA64] fix "section mismatch" compile-time-error
I noticed this typo when trying to compile a kernel which had
CONFIG_HOTPLUG turned off.  In that case, __devinit is no longer a
no-op and the compiler then detects a section-conflict.  Fix by using
__devinitdata instead of __devinit.

Same patch also submitted by Darren Williams to fix compilation error
using sim_defconfig (which has CONFIG_HOTPLUG=n).

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by:  Darren Williams <dsw@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-09 10:16:17 -07:00
David Woodhouse
ea9c102cb0 Add CONFIG_AUDITSC and CONFIG_SECCOMP support for ppc32
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-08 15:56:09 +01:00
Jeff Dike
2d58cc9a43 [PATCH] uml: x86_64 fixes
This fixes some x86_64 bugs -

- maybe_map returns -1 on error instead of 0, which is interpreted as
  physical address 0

- removed an include of ipc.h, which isn't needed

- fixed the calculation of signal frame location

- the signal delivery code is now immune to the stack expansion check

- added a missing include

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:31 -07:00
Bodo Stroesser
0f7e663dea [PATCH] uml: Fix process exit race
tt-mode closes switch_pipes in exit_thread_tt and kills processes in
switch_to_tt, if the exit_state is EXIT_DEAD or EXIT_ZOMBIE.

In very rare cases the exiting process can be scheduled out after having set
exit_state and closed switch_pipes (from release_task it calls proc_pid_flush,
which might sleep).  If this process is to be restarted, UML failes in
switch_to_tt with:

   write of switch_pipe failed, err = 9

We fix this by closing switch_pipes not in exit_thread_tt, but later in
release_thread_tt.  Additionally, we set switch_pipe[0] = 0 after closing.
switch_to_tt must not kill "from" process depending on its exit_state, but
must kill it after release_thread was processed only, so it examines
switch_pipe[0] for its decision.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:30 -07:00
Bodo Stroesser
b8bd0220c1 [PATCH] uml: S390 preparation, arch_align_stack
Only x86 and x86_64 use arch_align_stack(), all other subarches have:

 #define arch_align_stack(x) (x)

So, if this definition is found, UML's own arch_align_stack() should be
skipped.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:30 -07:00
Bodo Stroesser
1f3be588b5 [PATCH] uml: Use CONFIG variable for address space size
tt/mem.c still uses hardcoded TOP for i386 instead of CONFIG_TOP_ADDR provided
by subarch's Kconfig_XXXX, which would be right.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:30 -07:00
Jeff Dike
675dffc914 [PATCH] uml: Turn literal numbers into symbolic constants
So, there I was, looking at my own code, wondering what the magic setjmp
return values did.  This patch turns the constants that are used to make
requests of the initial thread into meaningful symbols.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:30 -07:00
Jeff Dike
37f02b63bd [PATCH] uml: Makefile cleanup
This eliminates some stuff from arch/um/kernel/Makefile which refers to a
file which has long since been deleted.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:30 -07:00
Jeff Dike
ccfcd37cb6 [PATCH] uml: Eliminate unusable function
Eliminate the non-inline version of switch_mm, which can't be used,
considering the inline version in asm/mmu_context.h

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:29 -07:00
Bodo Stroesser
804c2415c9 [PATCH] uml: S390 preparation, save an extra register
s390 tt-mode needs to save not only syscall number, but an further register
also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:29 -07:00
Bodo Stroesser
82c1c11bdd [PATCH] uml: S390 preparation, peekusr/pokeusr defined by subarch
s390 needs to change some parts of arch/um/kernel/ptrace.c.  Thus, the code
regarding PEEKUSER and POKEUSER are shifted to arch/um/sys-<subarch>/ptrace.c.

Also s390 debug registers need to be updated, when singlestepping is switched
on / off.  Thus, setting/resetting of singlestepping is centralized in the new
function set_singlestep(), which also inserts the macro
SUBARCH_SET_SINGLESTEP(mode), if defined.

Finally, s390 has the "ieee_instruction_pointer" in its
registers, which also is allowed to be read via

  ptrace( PTRACE_PEEKUSER, getpid(), PT_IEEE_IP, 0);

To implement this feature, sys_ptrace inserts the macro
SUBARCH_PTRACE_SPECIAL, if defined.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:29 -07:00
Jeff Dike
16c1116301 [PATCH] uml: command line handling cleanup
Command line handling cleanups - a couple of things made static and an
unused declaration removed from header.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:29 -07:00
Jeff Dike
f2a0f8b930 [PATCH] uml: __deprecated makes build unnecessarily noisy
Remove the __deprecated from verify_area_skas and verify_area_tt.  Since
verify_area is itself marked __deprecated, and it is the only caller of
these, then they don't need to be marked.  Marking them only makes the
build noisier.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:28 -07:00
Kumar Gala
b272125273 [PATCH] ppc32: Fix POWER3/POWER4 compiler error
In separating out support for hardware floating point we missed the fact
that both POWER3 and POWER4 have HW FP.  Enable CONFIG_PPC_FPU for POWER3
and POWER4 fixes the issue.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:28 -07:00
Paul Mackerras
b7c2b704bd [PATCH] ppc64: enable CONFIG_RTAS_PROC by default
This patch enables CONFIG_RTAS_PROC by default on pSeries.  This will
preserve /proc/ppc64/rtas/rmo_buffer, which is needed by librtas.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 22:09:27 -07:00
Linus Torvalds
22490eb80c Fix acpi_find_rsdp() - acpi_scan_rsdp takes length, not end
Noticed by Jakub Jermar <jermar@itbs.cz>
2005-05-06 15:39:23 -07:00
David Mosberger-Tang
966dc11fcc [IA64] Fix stack placement when INIT hits in kernel mode.
Without this patch, the stack is placed _below_ the current task
structure, which is risky at best.

Tony, I think this patch needs to go into 2.6.12, since it fixes a
real bug.  Without it, INIT may case secondary errors, which would be
most unpleasant.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-06 10:16:07 -07:00
Paul Mackerras
6c80a21cb1 [PATCH] ppc64: global interrupt queue cleanup
Move the code to set global interrupt queue membership to xics.c,
and remove no longer needed extern declarations.  Also call it on
all cpus (even the boot cpu) to prepare for kexec.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: R Sharada <sharada@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 08:07:01 -07:00
Paul Mackerras
2512809255 [PATCH] ppc64: remove explicit contig_page_data reference
Trivial patch to remove our last direct reference to contig_page_data.
This will make it just that much less hard to seperate NUMA and
DISCONTIG.  Please forward on.  Against 2.6.12-rc1

Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 22:00:52 -07:00
Paul Mackerras
8b3447db2e [PATCH] ppc64: remove unused arch/ppc64/boot/start.c
start.c is not referenced in the arch/ppc64/boot/Makefile

compile tested with the defconfig.

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 22:00:52 -07:00
Paul Mackerras
af4d4b3410 [PATCH] ppc64: remove asm/bootinfo.h include
The defines in bootinfo.h are not used, so the include can be removed.
According to Ben, birecs are not used on ppc64:

  on ppc64, we made the decision of enforcing the presence of an
  OF device-tree and either an OF-like client interface or a kexec
  like flattened tree.
  so if your bootloader want to say things to the kernel,
  it can do so by adding properties to the device-tree

compile-tested with defconfig

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 22:00:52 -07:00
Paul Mackerras
5e2afc1ddd [PATCH] ppc64: fix reloc_offset comment
The code in reloc_offset is actually subtracting the address in the link
register from the address calculated by the linker.  Perhaps the
extended mnemonic `sub' replaced an original `subf' and the comment just
did not get updated.

        bl      1f
1:      mflr    r3
        LOADADDR(r4,1b)
        sub     r3,r4,r3

Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 22:00:52 -07:00
Paul Mackerras
3892c5fa94 [PATCH] ppc64: fix prom.c compile warning
The code in unflatten_device_tree knows that get_property is written to
only return with lenp equal to 1 when also returning a valid pointer.
The gcc 3.3.3 compiler is not able to prove this to itself, so it warns
about a possible uninitialized pointer dereference:

 .../arch/ppc64/kernel/prom.c: In function `unflatten_device_tree':
 .../arch/ppc64/kernel/prom.c:828:
 warning: `p' might be used uninitialized in this function

Unless it is desired to rework the interaction between the two
functions, this will keep the existing behavior but quiet the compiler.

Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 22:00:52 -07:00
Tobias Klauser
6741f3a7f9 [PATCH] arch/ppc64: Replace custom MIN macro
Replace a custom MIN() macro with the min() macro from kernel.h
This patch removes 4 lines of redundant code.

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 19:32:59 -07:00
Kianusch Sayah Karadji
4713741955 [PATCH] x86: geode support fixes
- Changed Name/defines from "Geode GX" to "Geode GX1" for clarification

- Dropped "-march=i586" in favor of "-march=i486"

- Dopped X86_OOSTORE support for Geode GX1

Signed-off-by: Kianusch Sayah Karadji <kianusch@sk-tech.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:49 -07:00
Domen Puncer
125947f2ab [PATCH] CodingStyle: trivial whitespace fixups
When I do a "diff -Nur arch/i386 arch/x86_64" to see what is different between these two
architectures, I see some differences due to whitespace issues only. The attached patch removes
some of the noise by fixing up the following files:
- arch/i386/boot/bootsect.S
- arch/i386/boot/video.S
- arch/x86_64/boot/bootsect.S

Signed-off-by: Daniel Dickman <didickman@yahoo.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:49 -07:00
maximilian attems
a27e951f1e [PATCH] cyrix: eliminate bad section references
Fix cyrix section references:
 convert __initdata to __devinitdata.

Error: ./arch/i386/kernel/cpu/mtrr/cyrix.o .text refers to 00000379
R_386_32          .init.data
Error: ./arch/i386/kernel/cpu/mtrr/cyrix.o .text refers to 00000399
R_386_32          .init.data
Error: ./arch/i386/kernel/cpu/mtrr/cyrix.o .text refers to 000003b3
R_386_32          .init.data
Error: ./arch/i386/kernel/cpu/mtrr/cyrix.o .text refers to 000003b9
R_386_32          .init.data
Error: ./arch/i386/kernel/cpu/mtrr/cyrix.o .text refers to 000003bf
R_386_32          .init.data

Signed-of-by: maximilian attems <janitor@sternwelten.at>

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:47 -07:00
Prasanna S Panchamukhi
0b9e2cac8a [PATCH] Kprobes: Incorrect handling of probes on ret/lret instruction
Kprobes could not handle the insertion of a probe on the ret/lret
instruction and used to oops after single stepping since kprobes was
modifying eip/rip incorrectly.  Adjustment of eip/rip is not required after
single stepping in case of ret/lret instruction, because eip/rip points to
the correct location after execution of the ret/lret instruction.  This
patch fixes the above problem.

Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:39 -07:00
Bodo Stroesser
3a0a64e6c9 [PATCH] uml: header and code cleanup
Remove some definitions and declarations from arch/um/include/skas_ptrace.h,
as they have moved to arch/um/include/sysdep/skas_ptrace.h

Also, remove PTRACE_SIGPENDING support in UML at all.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:39 -07:00
Bodo Stroesser
7c5131a501 [PATCH] uml: remove a dangling symlink
UML: remove no longer needed arch-signal.h

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:38 -07:00
Bodo Stroesser
51a6b0c59a [PATCH] uml: s390 preparation, sighandler interface abstraction
s390 passes parameters in registers.  So the only safe way to find out the
address of signal context, error-address and error-type (trap_no), which are
passed to signal handlers as parameters, is to declare these parameters.

So I inserted an subarch-specific macro which holds the declaration of
parameters for signal handlers.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:38 -07:00
Bodo Stroesser
5fd861b682 [PATCH] uml: s390 preparation, delay moved to arch
s390 has fast read access to realtime clock (nanosecond resolution).  So it
makes sense to have an arch-specific implementation not only of __delay, but
__udelay also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:38 -07:00
Bodo Stroesser
7d37c6d52f [PATCH] uml: s390 preparation, checksumming done in arch code
Checksum handling largely depends on the subarch.

Thus, I renamed i386 arch_csum_partial in arch/um/sys-i386/checksum.S back to
csum_partial, removed csum_partial from arch/um/kernel/checksum.c and shifted
EXPORT_SYMBOL(csum_partial) to arch/um/sys-i386/ksyms.c.

Then, csum_partial_copy_to and csum_partial_copy_from were shifted from
arch/um/kernel/checksum.c to arch/um/include/sysdep-i386/checksum.h and
inserted in the calling functions csum_partial_copy_from_user() and
csum_and_copy_to_user().

Now, arch/um/kernel/checksum.c is empty and removed.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:38 -07:00
Bodo Stroesser
dbc35cc73f [PATCH] uml: s390 preparation, elf.h
This patch make elh.h a symlink to the new arch-specific include files of the
form elf-<subarch>.h, as in the same way already is done for some other
includes.  Also moves Elf-stuff from archparam-<subarch>.h and elf.h to the
new elf-<subarch>.h files.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:37 -07:00
Jeff Dike
a0b8d32020 [PATCH] uml: inclusion cleanup
The completion cleanup got rid of some semaphores, but didn't remove the
inclusion of asm/semaphore.h from xterm_kern.c.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:37 -07:00
Jeff Dike
2ba491759f [PATCH] uml: tidy Makefile.rules
Just some breaking of some overly-long lines.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:36 -07:00
Jeff Dike
cd2ee4a30c [PATCH] uml: Fix SIGWINCH relaying
This makes SIGWINCH work again, and fixes a couple of SIGWINCH-associated
crashes.  First, the sigio thread disables SIGWINCH because all hell breaks
loose if it ever gets one and tries to call the signal handling code.  Second,
there was a problem with deferencing tty structs after they were freed.  The
SIGWINCH support for a tty wasn't being turned off or freed after the tty went
away.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:36 -07:00
Bodo Stroesser
c578455a3e [PATCH] uml: S390 preparation, abstract host page fault data
This patch removes the arch-specific fault/trap-infos from thread and
skas-regs.

It adds a new struct faultinfo, that is arch-specific defined in
sysdep/faultinfo.h.

The structure is inserted in thread.arch and thread.regs.skas and
thread.regs.tt

Now, segv and other trap-handlers can copy the contents from regs.X.faultinfo
to thread.arch.faultinfo with one simple assignment.

Also, the number of macros necessary is reduced to

FAULT_ADDRESS(struct faultinfo)
    extracts the faulting address from faultinfo

FAULT_WRITE(struct faultinfo)
    extracts the "is_write" flag

SEGV_IS_FIXABLE(struct faultinfo)
    is true for the fixable segvs, i.e. (TRAP == 14)
    on i386

UPT_FAULTINFO(regs)
    result is (struct faultinfo *) to the faultinfo
    in regs->skas.faultinfo

GET_FAULTINFO_FROM_SC(struct faultinfo, struct sigcontext *)
    copies the relevant parts of the sigcontext to
    struct faultinfo.

On SIGSEGV, call user_signal() instead of handle_segv(), if the architecture
provides the information needed in PTRACE_FAULTINFO, or if PTRACE_FAULTINFO is
missing, because segv-stub will provide the info.

The benefit of the change is, that in case of a non-fixable SIGSEGV, we can
give user processes a SIGSEGV, instead of possibly looping on pagefault
handling.

Since handle_segv() sikked arch_fixup() implicitly by passing ip==0 to segv(),
I changed segv() to call arch_fixup() only, if !is_user.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:36 -07:00
Jeff Dike
ea66e8a3b6 [PATCH] uml: fix a ptrace call
This fixes write_ldt_entry to treat userspace_pid as an array.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:36 -07:00
Al Viro
fd7aab9c1a [PATCH] uml: finish cross-build support
O=... builds support.  Very easy, actually.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:36 -07:00
Al Viro
04fe392378 [PATCH] uml: fix missing subdir in x86_64
make distclean et.al.  are missing arch/um/sys-x86_64/utils; fixed the same
way we have it done for sys-i386 counterpart.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:35 -07:00
Al Viro
da998a2aec [PATCH] uml: cross-build support : mk_task and mk_constants
helpers in arch/um/util (mk_task and mk_constants) converted.  That's it -
none of the helpers depends on build and target being the same architecture
anymore.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:35 -07:00
Al Viro
2b8b611e9a [PATCH] uml: cross-build support : mk_thread
mk_thread converted

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:35 -07:00
Al Viro
a31769ed3e [PATCH] uml: cross-build support : kernel_offsets
The next group of helpers is a bit trickier - they want the constants similar
to those in user-offsets.h, but we need target sc.h for it.  So we can't put
that into user-offsets (sc.h depends on it) and need the second generated
header for that stuff (kernel-offsets.h.  BFD...

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:35 -07:00
Al Viro
6bae32d395 [PATCH] uml: cross-build support: mk_sc
Ditto for mk_sc

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:34 -07:00
Al Viro
1cd3bc1c81 [PATCH] uml: cross-build support : mk_ptregs
mk_ptregs converted.  Nothing new here, it's the same situation as with
mk_user_constants.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:34 -07:00
Al Viro
8d0b9dc9be [PATCH] uml: start cross-build support : mk_user_constants
Beginning of cross-build fixes.  Instead of expecting that mk_user_constants
(compiled and executed on the build box) will see the sizeof, etc.  for target
box, we do what every architecture already does for asm-offsets.  Namely, have
user-offsets.c compiled *for* *target* into user-offsets.s and sed it into the
header with relevant constants.  We don't need to reinvent any wheels - all
tools are already there.

This patch deals with mk_user_constants.  It doesn't assume any relationship
between target and build environment anymore - we pick all defines we need
from user-offsets.h.  Later patches will deal with the rest of mk_...  helpers
in the same way.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:34 -07:00
Al Viro
fcddd72e3e [PATCH] uml: use variables rather than symlinks in dependencies
Use explicit os-...  in make dependencies instead of playing with symlinks
(symlink in question is still created - it's needed for other things; however,
there's no reason to complicate ordering here).

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:34 -07:00
Al Viro
03f81dc50c [PATCH] uml: include the linker script rather than symlink it
Make vmlinux.lds.S include appopriate script instead of playing games with
symlinks.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:33 -07:00
Paolo 'Blaisorblade' Giarrusso
776cfebb43 [PATCH] uml kbuild: avoid useless rebuilds
- Fix some problems with usage of $(targets) (sometimes missing, sometimes
  used badly) that trigger partial rebuilds when doing a rebuild.

- At that purpose, also factor out some common code for symlinks creation.

- Fix a x86-64 build warning, caused by -L/usr/lib, which is anyway useless,
  and invalid in the x86-64 case.

Tested on x86_64 and x86.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:33 -07:00
Paolo 'Blaisorblade' Giarrusso
0c28130b5c [PATCH] x86_64: make string func definition work as intended
In include/asm-x86_64/string.h there are such comments:

/* Use C out of line version for memcmp */
#define memcmp __builtin_memcmp
int memcmp(const void * cs,const void * ct,size_t count);

This would mean that if the compiler does not decide to use __builtin_memcmp,
it emits a call to memcmp to be satisfied by the C out-of-line version in
lib/string.c.  What happens is that after preprocessing, in lib/string.i you
may find the definition of "__builtin_strcmp".

Actually, by accident, in the object you will find the definition of strcmp
and such (maybe a trick intended to redirect calls to __builtin_memcmp to the
default memcmp when the definition is not expanded); however, this particular
case is not a documented feature as far as I can see.

Also, the EXPORT_SYMBOL does not work, so it's duplicated in the arch.

I simply added some #undef to lib/string.c and removed the (now duplicated)
exports in x86-64 and UML/x86_64 subarchs (the second ones are introduced by
another patch I just posted for -mm).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
CC: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:33 -07:00
Paolo 'Blaisorblade' Giarrusso
23352fc252 [PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support
These are some trivial fixes for the x86-64 subarch module support.  The only
potential problem is that I have to modify arch/x86_64/kernel/module.c, to
avoid copying the whole of it.

I can't use it verbatim because it depends on a special vmalloc-like area for
modules, which for now (maybe that's to fix, I guess not) UML/x86-64 has not.
I went the easy way and reused the i386 vmalloc()-based allocator.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:33 -07:00
Paolo 'Blaisorblade' Giarrusso
f7fe878174 [PATCH] uml: obvious compile fixes for x86-64 Subarch and x86 regression fixes
This patch does some totally trivial compilation fixes.  It also restores the
debugregs manipulation, which was commented out simply because it doesn't
compile on x86_64 (we haven't yet implemented there debugregs handling).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
David Gibson
1f8d419e29 [PATCH] ppc64: pgtable.h and other header cleanups
This patch started as simply removing a few never-used macros from
asm-ppc64/pgtable.h, then kind of grew.  It now makes a bunch of
cleanups to the ppc64 low-level header files (with corresponding
changes to .c files where necessary) such as:
	- Abolishing never-used macros
	- Eliminating multiple #defines with the same purpose
	- Removing pointless macros (cases where just expanding the
macro everywhere turns out clearer and more sensible)
	- Removing some cases where macros which could be defined in
terms of each other weren't
	- Moving imalloc() related definitions from pgtable.h to their
own header file (imalloc.h)
	- Re-arranging headers to group things more logically
	- Moving all VSID allocation related things to mmu.h, instead
of being split between mmu.h and mmu_context.h
	- Removing some reserved space for flags from the PMD - we're
not using it.
	- Fix some bugs which broke compile with STRICT_MM_TYPECHECKS.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
Jesper Juhl
e685752de1 [PATCH] ppc64: add missing Kconfig help text
There's no help text for CONFIG_DEBUG_STACKOVERFLOW - add one.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
Anton Blanchard
7d12e522ba [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c
While looking at code generated by gcc4.0 I noticed some functions still
had frame pointers, even after we stopped ppc64 from defining
CONFIG_FRAME_POINTER.  It turns out kernel/Makefile hardwires
-fno-omit-frame-pointer on when compiling schedule.c.

Create CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER and define it on architectures
that dont require frame pointers in sched.c code.

(akpm: blame me for the name)

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
Kumar Gala
696c2b9f97 [PATCH] ppc32: Simplified PPC core revision report
We can identify new Freescale PPC cores by the fact that the MSB of the PVR
is set.  If we are a new Freescale core the decode of major/minor revision
numbers is simplified so we dont have to add new case checks for a every
new Freescale core.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00
David Woodhouse
075d6eb16d [PATCH] ppc32: platform-specific functions missing from kallsyms.
The PPC32 kernel puts platform-specific functions into separate sections so
that unneeded parts of it can be freed when we've booted and actually
worked out what we're running on today.

This makes kallsyms ignore those functions, because they're not between
_[se]text or _[se]inittext.  Rather than teaching kallsyms about the
various pmac/chrp/etc sections, this patch adds '_[se]extratext' markers
for kallsyms.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:31 -07:00
Alexander Nyberg
f48d9663f1 [PATCH] x86 stack initialisation fix
The recent change fix-crash-in-entrys-restore_all.patch

 	childregs->esp = esp;

 	p->thread.esp = (unsigned long) childregs;
-	p->thread.esp0 = (unsigned long) (childregs+1);
+	p->thread.esp0 = (unsigned long) (childregs+1) - 8;

 	p->thread.eip = (unsigned long) ret_from_fork;

introduces an inconsistency between esp and esp0 before the task is run the
first time.  esp0 is no longer the actual start of the stack, but 8 bytes
off.

This shows itself clearly in a scenario when a ptracer that is set to also
ptrace eventual children traces program1 which then clones thread1.  Now
the ptracer wants to modify the registers of thread1.  The x86 ptrace
implementation bases it's knowledge about saved user-space registers upon
p->thread.esp0.  But this will be a few bytes off causing certain writes to
the kernel stack to overwrite a saved kernel function address making the
kernel when actually running thread1 jump out into user-space.  Very
spectacular.

The testcase I've used is:
/* start with strace -f ./a.out */
#include <pthread.h>
#include <stdio.h>

void *do_thread(void *p)
{
	for (;;);
}

int main()
{
	pthread_t one;
	pthread_create(&one, NULL, &do_thread, NULL);
	for (;;);
	return 0;
}

So, my solution is to instead of just adjusting esp0 that creates an
inconsitent state I adjust where the user-space registers are saved with -8
bytes.  This gives us the wanted extra bytes on the start of the stack and
esp0 is now correct.  This solves the issues I saw from the original
testcase from Mateusz Berezecki and has survived testing here.  I think
this should go into -mm a round or two first however as there might be some
cruft around depending on pt_regs lying on the start of the stack.  That
however would have broken with the first change too!

It's actually a 2-line diff but I had to move the comment of why the -8 bytes
are there a few lines up. Thanks to Zwane for helping me with this.

Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:30 -07:00
Linus Torvalds
47c297529b Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6.git 2005-05-05 16:23:24 -07:00
Linus Torvalds
4adb18173a Automatic merge of master.kernel.org:/home/rmk/linux-2.6-rmk.git 2005-05-05 16:06:47 -07:00
Nicolas Pitre
41e46d6ab0 [PATCH] ARM: 2665/1: kill warnings in entry-armv.S
Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-05 23:24:45 +01:00
Nicolas Pitre
4b0e07a556 [PATCH] ARM: 2663/1: straightify TLS register emulation a bit more
Patch from Nicolas Pitre

This better express things, and should cover RMK's weird SMP toys.

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-05 23:24:45 +01:00
Coywolf Qi Hunt
7cc1712b8a [SPARC]: Remove legacy stuff from cpu_idle().
Currently sparc and sparc64's UP cpu_idle() checks current pid. This
is old time legacy. Now it's paranoia.

Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-05 14:53:01 -07:00
Christoph Hellwig
8edf72ebce [SPARC64]: Kill useless __pte_alloc_one_kernel indirection
warning: untested, but it there's not too much chance for screwups

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-05 14:27:56 -07:00
Russell King
f7e68bbf40 [PATCH] ARM: select PCI, ISA and ISA_DMA
Rather than using a long "depends on..." and "default y" lines for
these options, use select instead.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-05 14:49:01 +01:00
David Woodhouse
bfd4bda097 Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-05 13:59:37 +01:00
Russell King
4f7a18124c [PATCH] ARM: Fix kernel stack offset calculations
Various places in the ARM kernel implicitly assumed that kernel
stacks are always 8K due to hard coded constants.  Replace these
constants with definitions.

Correct the allowable range of kernel stack pointer values within
the allocation.  Arrange for the entire kernel stack to be zeroed,
not just the upper 4K if CONFIG_DEBUG_STACK_USAGE is set.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-05 13:11:00 +01:00
Linus Torvalds
897f5ab2cd Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6.git 2005-05-04 19:52:45 -07:00
Dean Nelson
9b48b46678 [IA64-SGI] move nodepda pointer out of pda
Remove the p_nodepda and p_subnodepda pointers from the pda_s structure.
And then define a new per-cpu pointer to the nodepda and export it so
that it can be accessed by kernel modules.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-04 10:18:32 -07:00
Al Viro
5cae841b13 [PATCH] ISA DMA Kconfig fixes - part 1
A bunch of drivers use ISA DMA helpers or their equivalents for
platforms that have ISA with different DMA controller (a lot of ARM
boxen).  Currently there is no way to put such dependency in Kconfig -
CONFIG_ISA is not it (e.g.  it is not set on platforms that have no ISA
slots, but have on-board devices that pretend to be ISA ones).

New symbol added - ISA_DMA_API.  Set when we have functional
enable_dma()/set_dma_mode()/etc.  set of helpers.  Next patches in the
series will add missing dependencies for drivers that need them.

I'm very carefully staying the hell out of the recurring flamefest on
what exactly CONFIG_ISA would mean in ideal world - added symbol has a
well-defined meaning and for now I really want to treat it as completely
independent from the mess around CONFIG_ISA.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04 07:33:13 -07:00
Al Viro
3c51f196b6 [PATCH] sparc NULL noise removal
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04 07:33:13 -07:00
Linus Torvalds
742b0c905d Merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6.git/ 2005-05-04 07:07:22 -07:00
Adrian Bunk
9171078ab5 [PATCH] PCI: drivers/pci/pci.c: remove pci_dac_set_dma_mask
pci_dac_set_dma_mask is currently completely unused.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03 23:45:17 -07:00
David S. Miller
41832a08fe [SPARC64]: Disable IRQ forwarding.
There is some race whereby IRQs get stuck, the IRQ status
is pending but no processor actually handles the IRQ vector
and thus the interrupt.
 
This is a temporary workaround.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-03 22:05:43 -07:00
David S. Miller
cee2824f85 [SPARC64]: Fix goal_cpu tracking in retarget_one_irq().
We would never advance the goal_cpu counter like we
should, so all IRQs would go to a single processor.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-03 22:04:36 -07:00
Tony Luck
c4b07b7b36 [IA64] Update arch/ia64/configs/tiger_defconfig
Kristen did most of the checking, bring this up to -rc2.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 16:27:44 -07:00
Tony Luck
a71f62edc9 [IA64] Fix two warnings introduced by perfmon patches.
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 16:21:45 -07:00
stephane eranian
a5a70b75d9 [IA64] another perfmon fix (take2)
- pfm_context_load(): change return value from EINVAL to EBUSY
  when context is already loaded.

- pfm_check_task_state(): pass test if context state is MASKED.
  It is safe to give access on PFM_CTX_MASKED because the PMU
  state (PMD) is stable and saved in software state.
  This helps multiplexing programs such as the example given
  in libpfm-3.1.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 15:47:58 -07:00
Stephane Eranian
8df5a500a3 [IA64] perfmon & PAL_HALT again
The pmu_active test is based on the values of PSR.up. THIS IS THE PROBLEM as
it does not take into account the lazy restore logic which is as follow (simplified):

context switch out:
	save PMDs
	clear psr.up
	release ownership

context switch in:
	if (ctx->last_cpu == smp_processor_id() && ctx->cpu_activation == cpu_activation) {
		set psr.up
		return
	}
	restore PMD
	restore PMC
	ctx->last_cpu   = smp_processor_id();
	ctx->activation = ++cpu_activation;
	set psr.up

The key here is that on context switch out, we clear psr.up and on context switch in
we check if nobody else used the PMU on that processor since last time we came. In
that case, we assume the PMD/PMC are ours and we simply reactivate.

The Caliper problem is that between the moment we context switch out and the moment we
come back, nobody effectively used the PMU BUT the processor went idle. Normally this
would have no incidence but PAL_HALT does alter the PMU registers.  In default_idle(),
the test on psr.up is not strong enough to cover this case and we go into PAL which
trashed the PMU resgisters. When we come back we falsely assume that this is our state
yet it is corrupted. Very nasty indeed.

To avoid the problem it is necessary to forbid going to PAL_HALT as soon as perfmon
installs some valid state in the PMU registers. This happens with an application
attaches a context to a thread or CPU. It is not enough to check the psr/dcr bits.
Hence I propose the attached patch. It adds a callback in process.c to modify the
condition to enter PAL on idle. Basically, now it is conditional to pal_halt=1 AND
perfmon saying it is okay.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 15:44:48 -07:00
Linus Torvalds
84e48b6d64 Merge of master.kernel.org:/home/rmk/linux-2.6-rmk.git 2005-05-03 15:27:24 -07:00
Nicolas Pitre
48af721540 [PATCH] ARM: 2662/1: missing "default y" for CONFIG_HAS_TLS_REG
Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-03 22:57:56 +01:00
Sascha Hauer
a493820df6 [PATCH] ARM: 2661/1: imxfb include
Patch from Sascha Hauer

This patch adds the missing include files for the i.MX framebuffer
driver.

Signed-off-by: Sascha Hauer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-05-03 22:57:56 +01:00
Mark Maule
3ea8b477b4 [IA64] altix: fix TIOCA dmamap list_add
Correct a bug where tioca_dma_mapped() is putting tioca dma map structs
on the wrong list.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:52:22 -07:00
Keith Owens
32709d8ae6 [IA64] SAL to OS callbacks cannot call sleeping
When SAL calls back into the OS, the OS code is running with preempt
disabled so it cannot call sleeping functions.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:48:55 -07:00
Russ Anderson
b1b901c202 [IA64] MCA recovery improvements
Jack Steiner uncovered some opportunities for improvement in
the MCA recovery code.

  1) Set bsp to save registers on the kernel stack.
  2) Disable interrupts while in the MCA recovery code.
  3) Change the way the user process is killed, to avoid 
     a panic in schedule.

Testing shows that these changes make the recovery code much 
more reliable with the 2.6.12 kernel.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:47:42 -07:00
David Woodhouse
446b8831f5 [IA64] fix ia64 syscall auditing
Attached is a patch against David's audit.17 kernel that adds checks
for the TIF_SYSCALL_AUDIT thread flag to the ia64 system call and
signal handling code paths.  The patch enables auditing of system
calls set up via fsys_bubble_down, as well as ensuring that
audit_syscall_exit() is called on return from sigreturn.

Neglecting to check for TIF_SYSCALL_AUDIT at these points results in
incorrect information in audit_context, causing frequent system panics
when system call auditing is enabled on an ia64 system.

I have tested this patch and have seen no problems with it.

[Original patch from Amy Griffis ported to current kernel by David Woodhouse]

From: Amy Griffis <amy.griffis@hp.com>
From: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:45:39 -07:00
Zwane Mwaikambo
7d5f9c0f10 [IA64] reduce cacheline bouncing in cpu_idle_wait
Andi noted that during normal runtime cpu_idle_map is bounced around a lot,
and occassionally at a higher frequency than the timer interrupt wakeup
which we normally exit pm_idle from.  So switch to a percpu variable.

I didn't move things to the slow path because it would involve adding
scheduler code to wakeup the idle thread on the cpus we're waiting for.

Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:40:18 -07:00
Mike Habeck
de7548d0e2 [IA64-SGI] Altix only: Fix for sn_dma_flush
The following patch fixes a bug in the SGI Altix sn_dma_flush code.  
sn_dma_flush is broken in 2.6.  The code isn't waiting for the DMA 
data to be flushed out of the PIC ASIC. This patch is based off the 
linux-ia64-test-2.6.12 tree

Signed-off-by: Mike Habeck <habeck@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:36:09 -07:00
Alex Williamson
bb0fc08545 [IA64] use common pxm function
This patch simplifies a couple places where we search for _PXM
values in ACPI namespace.  Thanks,

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:33:18 -07:00
Colin Ngam
c0b12422e5 [IA64-SGI] Altix only: Register Error Interrupt
The following patch ensures that the correct error interrupt handling 
routine is initialized.  This patch is based on the 2.6.12 ia64 release tree.

Signed-off-by: Colin Ngam <cngam@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 13:21:03 -07:00
Dean Nelson
3a7d555bfc [IA64-SGI] convert AMO address found in XPC's reserved page
This patch detects the existence of an uncached physical AMO address setup
by EFI's XPBOOT (SGI) and converts it to an uncached virtual AMO address.
Depends on a patch submitted on 23 March 2005 with the subject of:
    [PATCH 2/3] SGI Altix cross partition functionality (2nd revision)

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:50:22 -07:00
Dean Nelson
a2d974da0a [IA64-SGI] SGI Altix cross partition functionality [3/3]
This patch contains the cross partition pseudo-ethernet driver (XPNET)
functional support module.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:37:19 -07:00
Dean Nelson
89eb8eb927 [IA64-SGI] SGI Altix cross partition functionality [2/3]
This patch contains the communication module (XPC) for cross partition
communication on a partitioned SGI Altix.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:36:00 -07:00
Tony Luck
21223a9e78 [IA64] manually apply changes to arch/ia64/sn/kernel/Makefile
cg-patch couldn't apply the patch to Makefile, and my dumb script
rushed on and ran cg-commit without this change.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:25:50 -07:00
Dean Nelson
b0d82bd5df [IA64-SGI] SGI Altix cross partition functionality (2nd
This patch contains the shim module (XP) which interfaces between the
communication module (XPC) and the functional support modules (like XPNET).

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:16:52 -07:00
Dean Nelson
2e34f07ff0 [PATCH] move cnodeid_to_nasid_table out of pda
Another step in the effort to eliminate the SN pda structure.
This patch moves the cnodeid_to_nasid_table field out of the pda,
making it a standalone per-cpu data item, and exports it so it can
be accessed by kernel modules.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:07:46 -07:00
Bruce Losure
ce0a3956b3 [IA64-SGI] Altix patch to add bricktype knowledge to tiocx
Here is a patch to enable the SGI tiocx bus driver to distingush between
FPGA-attached h/w and non-FPGA-attached h/w.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:01:07 -07:00
Bruce Losure
c2d1d65ad4 [IA64-SGI] Altix only: Remove hubdev SAL call
Hi Tony,

This patch against ia64-test-2.6.12 fixes a bug where the tiocx code
was inadvertently un-doing some address modifications done in earlier
fixup code.    This patch just removes the offending code.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 11:58:37 -07:00
David Mosberger-Tang
2074615a13 [IA64] use fc.i for fluch_icache_range()
This is a small patch to switch fluch_icache_range() to use fc.i
instead of fc.  This would save time on processors which can establish
i-cache coherency without flushing the cache-line out to memory (not
that any current processors do).  On existing processors, fc.i behaves
like fc.  The only caveat is that very old assemblers may not know
about fc.i yet.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 11:27:33 -07:00
David Mosberger-Tang
9df6f705c0 [IA64] fix typos caught by new assembler
Patch below fixes 3 trivial typos which are caught by the new
assembler (v2.169.90).  Please apply.

[Note: fix to memcpy that was also part of this patch was separately
 applied from patches by H.J. and Andreas ... so the delta here only
 has the other two fixes. -Tony]

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 10:56:42 -07:00
Andreas Schwab
512f64295f [IA64] Fix memcpy_mck.S for current binutils
The current ia64 assembler complains about mismatching .proc/.endp pairs.
(Same patch also sent by H.J. Lu)

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 10:49:29 -07:00
Suresh Siddha
7a9bdd8842 [IA64] Add config SCHED_SMT
Now that we have MC/MT detection patches in, appended patch allows us to
configure MT scheduler optimizations. For now, we will this option off
by default.

There is some discussion going on lkml about setting up sched-domains 
which are absolutely needed (like for example, we shouldn't setup SMT domain
for non MT processors). Once that patch goes in, we can enable this option by
default.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 10:33:28 -07:00
Benjamin Herrenschmidt
52292c9b8c [PATCH] ppc64: fix gcc 4.0 vs CONFIG_ALTIVEC
gcc-4.0 generates altivec code implicitly when -mcpu indicates an
altivec capable CPU which is not suitable for the kernel.  However, we
used to set -mcpu=970 when CONFIG_ALTIVEC was set because a gcc-3.x bug
prevented from using -maltivec along with -mcpu=power4, thus prevented
building the RAID6 altivec code.

This patch fixes all of this by testing for the gcc version.  If 4.0 or
later, just normally use -mcpu=power4 and let the RAID6 code add
-maltivec to the few files it needs to be compiled with altivec support.
For 3.x, we still use -mcpu=970 to work around the above problem, which
is fine as 3.x will never implicitly generate altivec code.

The Makefile hackery may not be the most lovely, I welcome anybody more
skilled than me to improve it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-03 07:38:34 -07:00
David Woodhouse
488f2eaca1 [AUDIT] Log correct syscall args for i386 processes on x86_64
The i386 syscall ABI uses different registers. Log those instead of the
x86_64 ones.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-03 14:11:02 +01:00
Russell King
1f9c381fa3 [PATCH] ARM: Clean up commenting/spacing for Integrator
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-03 12:22:19 +01:00
Russell King
5cd0c34420 [PATCH] ARM: decompressor: use platform debug macros
Rather than duplicate the assembly for debug macros in the
decompressor head.S, use asm/arch/debug-macros.S instead.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-03 12:18:46 +01:00
David Woodhouse
27b030d58c Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-03 08:14:09 +01:00
Jeff Dike
79d20b14a0 [AUDIT] Update UML audit-syscall-{entry,exit} calls to new prototypes
This patch is for -mm only.  It should probably be included in git-audit,
and should be forwarded to Linus iff git-audit is.

It updates the audit-syscall-{entry,exit} calls to current -mm.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-03 07:54:51 +01:00
Benjamin Herrenschmidt
e521dca64e [PATCH] ppc32: Fix might_sleep() warning with clock spreading
The clock spreading disable/enable code was called to late/early during
the suspend/resume code on some laptops and would trigger a
might_sleep() warning due to the down() call in the low level i2c code.

This fixes it by calling those functions earlier/later when interrupts
are still enabled.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-02 08:15:22 -07:00
Benjamin Herrenschmidt
f0f539755b [PATCH] ppc32: Fix sleep on old 101 PowerBook
A typo in the machine table incorrectly mark the 101 PowerBook as
needing explicit callback from the video driver to enable sleep mode. I
did not implement that mecanism for chipsest older than r128, so we need
to mark this machine as always beeing able to sleep for now.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 19:43:54 -07:00
Benjamin Herrenschmidt
15fd56867b [PATCH] ppc32: Workaround a cache flush issue on sleep
We are experiencing a problem when flushing the CPU caches before sleep
on some laptop models using the 750FX CPU rev 1.X. While I haven't been
able to figure out a proper explanation for what's going on, I do have a
workaround that seem to work reliably and allows those machine to sleep
and wakeup properly again.

I'll re-update that code if/when I ever find exactly what is happening
with those CPU revisions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 18:22:34 -07:00
Adrian Bunk
408b664a7d [PATCH] make lots of things static
Another large rollup of various patches from Adrian which make things static
where they were needlessly exported.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:29 -07:00
Adrian Bunk
5f76be80d9 [PATCH] fbdev: edid.h cleanups
This patch removes some completely unused code.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:23 -07:00
Jesper Juhl
7ed20e1ad5 [PATCH] convert that currently tests _NSIG directly to use valid_signal()
Convert most of the current code that uses _NSIG directly to instead use
valid_signal().  This avoids gcc -W warnings and off-by-one errors.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:14 -07:00
Stephen Rothwell
7d87e14c23 [PATCH] consolidate sys_shmat
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:12 -07:00
Jesper Juhl
e49332bd12 [PATCH] misc verify_area cleanups
There were still a few comments left refering to verify_area, and two
functions, verify_area_skas & verify_area_tt that just wrap corresponding
access_ok_skas & access_ok_tt functions, just like verify_area does for
access_ok - deprecate those.

There was also a few places that still used verify_area in commented-out
code, fix those up to use access_ok.

After applying this one there should not be anything left but finally
removing verify_area completely, which will happen after a kernel release
or two.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:08 -07:00
Paul E. McKenney
fbd568a3e6 [PATCH] Change synchronize_kernel to _rcu and _sched
This patch changes calls to synchronize_kernel(), deprecated in the earlier
"Deprecate synchronize_kernel, GPL replacement" patch to instead call the new
synchronize_rcu() and synchronize_sched() APIs.

Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:04 -07:00
Matt Mackall
d59745ce3e [PATCH] clean up kernel messages
Arrange for all kernel printks to be no-ops.  Only available if
CONFIG_EMBEDDED.

This patch saves about 375k on my laptop config and nearly 100k on minimal
configs.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:02 -07:00
Matt Mackall
cd7619d6bf [PATCH] Exterminate PAGE_BUG
Remove PAGE_BUG - repalce it with BUG and BUG_ON.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:01 -07:00
Cornelia Huck
4beb37097b [PATCH] s390: remove ioctl32 from dasdcmb
The ioctl32_conversion routines will be deprecated: Remove them from dasd_cmb
and handle the three cmb ioctls like all other dasd ioctls.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:59 -07:00
Martin Schwidefsky
15439d74f6 [PATCH] s390: cmm guest sender id
An arbitrary guest must not be allowed to trigger cmm actions.  Only one
specific guest namely the one that serves as the resource monitor may send cmm
messages.  Add a parameter that allows to specify the guest that may send
messages.  z/VMs resource manager has the name 'VMRMSVM' which is the default.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:58 -07:00
Peter Oberparleiter
0b642ede47 [PATCH] s390: default storage key
Provide an easy way to define a non-zero storage key at compile time.  This is
useful for debugging purposes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:58 -07:00
Heiko Carstens
c9e3735359 [PATCH] s390: fix memory holes and cleanup setup_arch
The memory setup didn't take care of memory holes and this makes the memory
management think there would be more memory available than there is in
reality.  That causes the OOM killer to kill processes even if there is enough
memory left that can be written to the swap space.

The patch fixes this by using free_area_init_node with an array of memory
holes instead of free_area_init.  Further the patch cleans up the code in
setup.c by splitting setup_arch into smaller pieces.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:57 -07:00
Martin Schwidefsky
4b7e070662 [PATCH] s390: idle timer setup
Fix overflow in calculation of the new tod value in stop_hz_timer and fix
wrong virtual timer list idle time in case the virtual timer is already
expired in stop_cpu_timer.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:57 -07:00