x86/paravirt: use callee-saved convention for pte_val/make_pte/etc

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Impact: Optimization

In the native case, pte_val, make_pte, etc are all just identity
functions, so there's no need to clobber a lot of registers over them.

(This changes the 32-bit callee-save calling convention to return both
EAX and EDX so functions can return 64-bit values.)

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

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This commit is contained in:

Jeremy Fitzhardinge 2009-01-28 14:35:07 -08:00 • committed by H. Peter Anvin

parent 791bad9d28

commit da5de7c22e

3 changed files with 67 additions and 88 deletions

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78

arch/x86/include/asm/paravirt.h

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53

arch/x86/kernel/paravirt.c

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24

arch/x86/xen/mmu.c

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