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5 Commits

Author SHA1 Message Date
Andy Lutomirski
59e97e4d6f x86: Make alternative instruction pointers relative 
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>
 2011-07-13 11:22:56 -07:00
Fenghua Yu
9072d11da1 x86, alternative: Add altinstruction_entry macro 
Add altinstruction_entry macro to generate .altinstructions section
entries from assembly code.  This should be less failure-prone than
open-coding.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-5-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
 2011-05-17 15:40:25 -07:00
Jan Beulich
5967ed87ad x86-64: Reduce SMP locks table size 
Reduce the SMP locks table size by using relative pointers instead of
absolute ones, thus cutting the table size by half.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4BCF30FE020000780003B3B6@vpn.id2.novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2010-04-28 17:15:47 -07:00
Jan Beulich
99063c0bce x86/alternatives: No need for alternatives-asm.h to re-invent stuff already in asm.h 
This at once also gets the alignment specification right for
x86-64.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4B0FF8F80200007800022708@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2009-12-02 11:39:45 +01:00
Al Viro
bb8985586b x86, um: ... and asm-x86 move 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2008-10-22 22:55:20 -07:00