Messages in this thread Patch in this message | | | Date | Thu, 19 Apr 2012 17:29:45 -0700 | From | "tip-bot for H. Peter Anvin" <> | Subject | [tip:x86/extable] x86, doc: Revert "x86: Document rdmsr_safe restrictions" |
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Commit-ID: 060feb650010c261fcfbae9de9348b46cedcd3cd Gitweb: http://git.kernel.org/tip/060feb650010c261fcfbae9de9348b46cedcd3cd Author: H. Peter Anvin <hpa@linux.intel.com> AuthorDate: Thu, 19 Apr 2012 17:07:34 -0700 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Thu, 19 Apr 2012 17:07:34 -0700
x86, doc: Revert "x86: Document rdmsr_safe restrictions"
This reverts commit ce37defc0f6673f5ca2c92ed5cfcaf290ae7dd16 "x86: Document rdmsr_safe restrictions", as these restrictions no longer apply.
Reported-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/20120419171609.GH3221@aftab.osrc.amd.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> --- arch/x86/include/asm/msr.h | 9 +-------- 1 files changed, 1 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 95203d4..084ef95 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -169,14 +169,7 @@ static inline int wrmsr_safe(unsigned msr, unsigned low, unsigned high) return native_write_msr_safe(msr, low, high); } -/* - * rdmsr with exception handling. - * - * Please note that the exception handling works only after we've - * switched to the "smart" #GP handler in trap_init() which knows about - * exception tables - using this macro earlier than that causes machine - * hangs on boxes which do not implement the @msr in the first argument. - */ +/* rdmsr with exception handling */ #define rdmsr_safe(msr, p1, p2) \ ({ \ int __err; \
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