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x86: Make alternative instruction pointers relative

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This save a few bytes on x86-64 and means that future patches can
apply alternatives to unrelocated code.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/ff64a6b9a1a3860ca4a7b8b6dc7b4754f9491cd7.1310563276.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Andy Lutomirski
2011-07-13 09:24:10 -04:00
committed by H. Peter Anvin
parent c9712944b2
commit 59e97e4d6f
6 changed files with 31 additions and 30 deletions
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4
arch/x86/include/asm/alternative-asm.h
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@@ -17,8 +17,8 @@
.macro altinstruction_entry orig alt feature orig_len alt_len
.align 8
.quad \orig
.quad \alt
.long \orig - .
.long \alt - .
.word \feature
.byte \orig_len
.byte \alt_len