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Linus Torvalds b5db0e3865 Revert "x86 PAT: remove CPA WARN_ON for zero pte" 
This reverts commit 58dab916df, which
makes my Nehalem come to a nasty crawling almost-halt.  It looks like it
turns off caching of regular kernel RAM, with the understandable
slowdown of a few orders of magnitude as a result.

Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2009-01-15 16:25:09 -08:00
..
Makefile Merge branches 'tracing/ftrace', 'tracing/fastboot', 'tracing/nmisafe' and 'tracing/urgent' into tracing/core 2008-11-08 09:34:35 +01:00
dump_pagetables.c x86: another user of PTE_FLAGS_MASK 2008-08-20 12:38:41 +02:00
extable.c x86: unify extable_{32|64}.c 2008-01-30 13:31:41 +01:00
fault.c x86: avoid theoretical vmalloc fault loop 2009-01-12 19:24:21 +01:00
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 x86: add hugepagesz option on 64-bit 2008-07-24 10:47:19 -07:00
init_32.c resource: allow MMIO exclusivity for device drivers 2009-01-07 11:12:32 -08:00
init_64.c resource: allow MMIO exclusivity for device drivers 2009-01-07 11:12:32 -08:00
iomap_32.c x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps 2008-10-31 10:12:38 +01:00
ioremap.c x86: soften multi-BAR mapping sanity check warning message 2008-12-12 09:22:26 +01:00
k8topology_64.c x86: k8 numa register active regions later 2009-01-06 13:21:21 +01:00
kmmio.c - fix mmioftrace + rcu merge interaction 2008-05-25 09:51:43 +02:00
memtest.c x86: memtest fix use of reserve_early() 2008-10-22 17:08:06 +02:00
mmap.c x86: unify mmap_{32|64}.c 2008-01-30 13:31:10 +01:00
mmio-mod.c mmiotrace: remove left-over marker cruft 2008-10-14 10:37:17 +02:00
numa_32.c trivial: replace last usages of __FUNCTION__ in kernel 2009-01-07 15:48:54 -08:00
numa_64.c x86: prepare for cpumask iterators to only go to nr_cpu_ids 2008-12-16 17:40:58 -08:00
pageattr-test.c x86: make sure the CPA test code's use of _PAGE_UNUSED1 is obvious 2008-09-05 17:09:57 +02:00
pageattr.c Revert "x86 PAT: remove CPA WARN_ON for zero pte" 2009-01-15 16:25:09 -08:00
pat.c Revert "x86 PAT: remove CPA WARN_ON for zero pte" 2009-01-15 16:25:09 -08:00
pf_in.c x86: fix mmiotrace 8-bit register decoding 2008-10-14 10:33:50 +02:00
pf_in.h x86 mmiotrace: move files into arch/x86/mm/. 2008-05-24 11:25:37 +02:00
pgtable.c x86: pgd_{c,d}tor() cleanup 2008-09-06 19:47:09 +02:00
pgtable_32.c i386: vmalloc size fix 2008-08-21 10:13:21 +02:00
srat_32.c x86: don't call e820_regiter_active_regions if out of range on node 2008-08-14 11:35:52 +02:00
srat_64.c x86: prepare for cpumask iterators to only go to nr_cpu_ids 2008-12-16 17:40:58 -08:00
testmmiotrace.c x86 mmiotrace: implement mmiotrace_printk() 2008-10-14 10:37:11 +02:00