Avi Kivity 7c68af6e32 core, x86: Add user return notifiers ... Add a general per-cpu notifier that is called whenever the kernel is about to return to userspace. The notifier uses a thread_info flag and existing checks, so there is no impact on user return or context switch fast paths. This will be used initially to speed up KVM task switching by lazily updating MSRs. Signed-off-by: Avi Kivity <avi@redhat.com> LKML-Reference: <1253342422-13811-1-git-send-email-avi@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2009-10-01 12:12:18 -07:00
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asm	core, x86: Add user return notifiers	2009-10-01 12:12:18 -07:00