Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable
From: Andreas Kleen <hidden>
Date: 2007-03-20 11:33:56
Also in:
lkml, virtualization, xen-devel
Possibly related (same subject, not in this thread)
- 2007-03-21 · Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable · Andrew Morton <akpm@linux-foundation.org>
- 2007-03-21 · Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable · Zachary Amsden <hidden>
- 2007-03-21 · Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable · Linus Torvalds <torvalds@linux-foundation.org>
- 2007-03-21 · Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable · Zachary Amsden <hidden>
- 2007-03-21 · Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable · Linus Torvalds <torvalds@linux-foundation.org>
Am Di 20.03.2007 06:54 schrieb Jeremy Fitzhardinge [off-list ref]:
Zachary Amsden wrote:quoted
For VMI, the default clobber was "cc", and you need a way to allow at least that, because saving and restoring flags is too expensive on x86.According to lore (Andi, I think), asm() always clobbers cc.
asm with input and/or output. I'm not sure about asms without that. -Andi