Ravikiran G Thirumalai 9e41bff270 x86: fix /dev/mem mmap breakage when PAT is disabled ... Impact: allow /dev/mem mmaps on non-PAT CPUs/platforms Fix mmap to /dev/mem when CONFIG_X86_PAT is off and CONFIG_STRICT_DEVMEM is off mmap to /dev/mem on kernel memory has been failing since the introduction of PAT (CONFIG_STRICT_DEVMEM=n case). Seems like the check to avoid cache aliasing with PAT is kicking in even when PAT is disabled. The bug seems to have crept in 2.6.26. This patch makes sure that the mmap to regular kernel memory succeeds if CONFIG_STRICT_DEVMEM=n and PAT is disabled, and the checks to avoid cache aliasing still happens if PAT is enabled. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Tested-by: Tim Sirianni <tim@scalemp.com> Cc: <stable@kernel.org> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2008-10-30 23:54:41 +01:00
..
dump_pagetables.c
extable.c
fault.c	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-10-16 15:08:45 -07:00
gup.c	x86: two trivial sparse annotations	2008-10-29 08:02:28 +01:00
highmem_32.c	Export kmap_atomic_pfn for DRM-GEM.	2008-10-18 07:10:12 +10:00
hugetlbpage.c
init_32.c
init_64.c	x86: remove debug code from arch_add_memory()	2008-10-29 09:29:22 +01:00
ioremap.c	x86: start annotating early ioremap pointers with __iomem	2008-10-29 08:05:14 +01:00
k8topology_64.c
kmmio.c
Makefile
memtest.c	x86: memtest fix use of reserve_early()	2008-10-22 17:08:06 +02:00
mmap.c
mmio-mod.c
numa_32.c
numa_64.c
pageattr-test.c
pageattr.c	proc: switch /proc/meminfo to seq_file	2008-10-23 13:52:40 +04:00
pat.c	x86: fix /dev/mem mmap breakage when PAT is disabled	2008-10-30 23:54:41 +01:00
pf_in.c
pf_in.h
pgtable.c
pgtable_32.c
srat_32.c
srat_64.c
testmmiotrace.c