Yinghai Lu 98e7a98997 x86, mm: Make sure to find a 2M free block for the first mapped area ... Henrik reported that his MacAir 3.1 would not boot with | commit 8d57470d8f | Date: Fri Nov 16 19:38:58 2012 -0800 | | x86, mm: setup page table in top-down It turns out that we do not calculate the real_end properly: We try to get 2M size with 4K alignment, and later will round down to 2M, so we will get less then 2M for first mapping, in extreme case could be only 4K only. In Henrik's system it has (1M-32K) as last usable rage is [mem 0x7f9db000-0x7fef8fff]. The problem is exposed when EFI booting have several holes and it will force mapping to use PTE instead as we only map usable areas. To fix it, just make it be 2M aligned, so we can be guaranteed to be able to use large pages to map it. Reported-by: Henrik Rydberg <rydberg@euromail.se> Bisected-by: Henrik Rydberg <rydberg@euromail.se> Tested-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/CAE9FiQX4nQ7_1kg5RL_vh56rmcSHXUi1ExrZX7CwED4NGMnHfg@mail.gmail.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2013-03-06 20:18:32 -08:00
..
boot	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-27 16:17:42 -08:00
configs	x86: Default to ARCH=x86 to avoid overriding CONFIG_64BIT	2012-12-20 14:37:18 -08:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2013-02-25 15:56:15 -08:00
ia32	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-03-02 08:34:06 -08:00
include	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-03-02 08:34:06 -08:00
kernel	x86: Fix 32-bit *_cpu_data initializers	2013-03-06 20:15:50 -08:00
kvm	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
lguest	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-21 18:06:55 -08:00
lib	x86: Be consistent with data size in getuser.S	2013-02-11 23:14:48 -08:00
math-emu
mm	x86, mm: Make sure to find a 2M free block for the first mapped area	2013-03-06 20:18:32 -08:00
net	x86: bpf_jit_comp: add pkt_type support	2013-01-30 22:38:34 -05:00
oprofile	oprofile, x86: Fix wrapping bug in op_x86_get_ctrl()	2012-10-15 14:38:24 +02:00
pci	Bug-fixes:	2013-03-03 14:22:53 -08:00
platform	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-27 16:17:42 -08:00
power	Merge remote-tracking branch 'origin/x86/mm' into x86/mm2	2013-02-01 02:28:36 -08:00
realmode	Merge remote-tracking branch 'origin/x86/mm' into x86/mm2	2013-02-01 02:28:36 -08:00
syscalls	fix compat truncate/ftruncate	2013-02-25 09:24:55 -05:00
tools	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-05 07:57:09 +11:00
um	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
vdso	timers/x86/hpet: Use HPET_COUNTER to specify the hpet counter in vread_hpet()	2013-02-15 12:13:18 +01:00
video
xen	xen/pat: Disable PAT using pat_enabled value.	2013-02-28 09:03:00 -05:00
.gitignore
Kbuild
Kconfig	arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS	2013-02-27 19:10:23 -08:00
Kconfig.cpu	x86, 386 removal: Document Nx586 as a 386 and thus unsupported	2012-11-29 13:28:39 -08:00
Kconfig.debug
Makefile	Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 19:12:03 -08:00
Makefile.um
Makefile_32.cpu	x86, 386 removal: Remove CONFIG_M386 from Kconfig	2012-11-29 13:23:01 -08:00