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x86: Document rdmsr_safe restrictions
authorBorislav Petkov <borislav.petkov@amd.com>
Mon, 5 Dec 2011 13:28:37 +0000 (14:28 +0100)
committerBorislav Petkov <borislav.petkov@amd.com>
Mon, 5 Dec 2011 13:28:37 +0000 (14:28 +0100)
commit1481e3be7768278b7f3b1e7d21e085213fb7c930
treee662613f6ef4629ec8504502a87079c9b93117datree | snapshot
parent05639c9f8165f129103e70f3d00ec87103b7f94acommit | diff
x86: Document rdmsr_safe restrictions

Recently, I got bitten by using rdmsr_safe too early in the boot
process. Document its shortcomings for future reference.

Link: http://lkml.kernel.org/r/4ED5B70F.606@lwfinger.net
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
arch/x86/include/asm/msr.h diff | blob | history
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