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authorSuresh Siddha <suresh.b.siddha@intel.com>2009-02-11 11:20:23 -0800
committerIngo Molnar <mingo@elte.hu>2009-02-12 08:27:27 +0100
commitbe03d9e8022030c16abf534e33e185bfc3d40eef (patch)
tree30e197e7eb3631daa882219d882443e58b30ab1a /arch/x86/kernel/trampoline.c
parent4f06b0436b2ddbd3b67b10e77098a6862787b3eb (diff)
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>
Diffstat (limited to 'arch/x86/kernel/trampoline.c')
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