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(parent: b8aa287) | patch
x86/paravirt: selectively save/restore regs around pvops calls
authorJeremy Fitzhardinge <jeremy@goop.org>
Wed, 28 Jan 2009 22:35:04 +0000 (14:35 -0800)
committerH. Peter Anvin <hpa@linux.intel.com>
Fri, 30 Jan 2009 22:51:44 +0000 (14:51 -0800)
commit9104a18dcdd8dfefdddca8ce44988563f13ed3c4
tree9e0b32d6340eb8335ca3ee1fb0f13c203b47c734tree | snapshot (tar.gz zip)
parentb8aa287f77be943e37a84fa4657e27df95269bfbcommit | diff
x86/paravirt: selectively save/restore regs around pvops calls

Impact: Optimization

Each asm paravirt-ops call says what registers are available for
clobbering.  This patch makes use of this to selectively save/restore
registers around each pvops call.  In many cases this significantly
shrinks code size.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
arch/x86/include/asm/paravirt.h diff | blob | blame | history