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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-06-11 19:52:53 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-07-20 12:42:32 +0300 |
| commit | 622395a9e63bf87a16faecf555ed02375cbae5b7 (patch) | |
| tree | c4a8082660a4e4bf8f687a33921d292ae35f6394 /virt | |
| parent | 7f39f8ac177db258200053074aa7a3d98656b1cf (diff) | |
| download | op-kernel-dev-622395a9e63bf87a16faecf555ed02375cbae5b7.zip op-kernel-dev-622395a9e63bf87a16faecf555ed02375cbae5b7.tar.gz | |
KVM: only abort guest entry if timer count goes from 0->1
Only abort guest entry if the timer count went from 0->1, since for 1->2
or larger the bit will either be set already or a timer irq will have
been injected.
Using atomic_inc_and_test() for it also introduces an SMP barrier
to the LAPIC version (thought it was unecessary because of timer
migration, but guest can be scheduled to a different pCPU between exit
and kvm_vcpu_block(), so there is the possibility for a race).
Noticed by Avi.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions
