| commit | 299018f44ac553dce3caf84df1d14c4764faa279 | [log] [tgz] |
|---|---|---|
| author | Gleb Natapov <gleb@redhat.com> | Mon Jun 03 11:30:02 2013 +0300 |
| committer | Gleb Natapov <gleb@redhat.com> | Mon Jun 03 11:32:39 2013 +0300 |
| tree | 75c178b1c2767697e2bef132aea84a8c04c1b156 | |
| parent | 8acb42070ec4c87a9baab5c7bac626030d5bef28 [diff] |
KVM: Fix race in apic->pending_events processing
apic->pending_events processing has a race that may cause INIT and
SIPI
processing to be reordered:
vpu0: vcpu1:
set INIT
test_and_clear_bit(KVM_APIC_INIT)
process INIT
set INIT
set SIPI
test_and_clear_bit(KVM_APIC_SIPI)
process SIPI
At the end INIT is left pending in pending_events. The following patch
fixes this by latching pending event before processing them.
Signed-off-by: Gleb Natapov <gleb@redhat.com>