x86/paravirt: implement PVOP_CALL macros for callee-save functions

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Impact: Optimization

Functions with the callee save calling convention clobber many fewer
registers than the normal C calling convention.  Implement variants of
PVOP_V?CALL* accordingly.  This only bothers with functions up to 3
args, since functions with more args may as well use the normal
calling convention.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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Jeremy Fitzhardinge 2009-01-28 14:35:06 -08:00 • committed by H. Peter Anvin

parent ecb93d1ccd

commit 791bad9d28

1 changed files with 99 additions and 35 deletions

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arch/x86/include/asm/paravirt.h

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