x86, msr: CFI annotations, cleanups for msr-reg.S

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Add CFI annotations for native_{rd,wr}msr_safe_regs().
Simplify the 64-bit implementation: we don't allow the upper half
registers to be set, and so we can use them to carry state across the
operation.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <petkovbb@gmail.com>
LKML-Reference: <1251705011-18636-1-git-send-email-petkovbb@gmail.com>

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H. Peter Anvin 2009-08-31 13:59:53 -07:00

parent 709972b1f6

commit 79c5dca361

1 changed files with 42 additions and 38 deletions

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arch/x86/lib/msr-reg.S

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