linux/arch/x86/mm
Suresh Siddha be03d9e802 x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/mem
Jeff Mahoney reported:

> With Suse's hwinfo tool, on -tip:
> WARNING: at arch/x86/mm/pat.c:637 reserve_pfn_range+0x5b/0x26d()

reserve_pfn_range() is not tracking the memory range below 1MB
as non-RAM and as such is inconsistent with similar checks in
reserve_memtype() and free_memtype()

Rename the pagerange_is_ram() to pat_pagerange_is_ram() and add the
"track legacy 1MB region as non RAM" condition.

And also, fix reserve_pfn_range() to return -EINVAL, when the pfn
range is RAM. This is to be consistent with this API design.

Reported-and-tested-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12 08:27:27 +01:00
..
dump_pagetables.c
extable.c
fault.c x86: avoid theoretical vmalloc fault loop 2009-01-12 19:24:21 +01:00
gup.c
highmem_32.c
hugetlbpage.c
init_32.c x86: fix assumed to be contiguous leaf page tables for kmap_atomic region (take 2) 2009-01-16 13:47:04 +01:00
init_64.c x86: remove kernel_physical_mapping_init() from init section 2009-01-20 00:31:43 +01:00
iomap_32.c x86: work around PAGE_KERNEL_WC not getting WC in iomap_atomic_prot_pfn. 2009-01-26 11:14:27 +01:00
ioremap.c x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/mem 2009-02-12 08:27:27 +01:00
k8topology_64.c
kmmio.c
Makefile
memtest.c
mmap.c
mmio-mod.c
numa_32.c trivial: replace last usages of __FUNCTION__ in kernel 2009-01-07 15:48:54 -08:00
numa_64.c
pageattr-test.c
pageattr.c x86/cpa: make sure cpa is safe to call in lazy mmu mode 2009-02-12 08:27:26 +01:00
pat.c x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/mem 2009-02-12 08:27:27 +01:00
pf_in.c
pf_in.h
pgtable_32.c
pgtable.c
srat_32.c
srat_64.c
testmmiotrace.c