diff options
| author | Wanpeng Li <[email protected]> | 2017-08-01 16:05:25 -0700 |
|---|---|---|
| committer | Radim Krčmář <[email protected]> | 2017-08-02 22:41:01 +0200 |
| commit | f4ef19108608c81769db69976999d056c070a6f0 (patch) | |
| tree | c6c8bbbe1b23473fc29deb1cb4160b1d4b163b2d /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 337c017ccdf2653d0040099433fc1a2b1beb5926 (diff) | |
KVM: X86: Fix loss of pending INIT due to race
When SMP VM start, AP may lost INIT because of receiving INIT between
kvm_vcpu_ioctl_x86_get/set_vcpu_events.
vcpu 0 vcpu 1
kvm_vcpu_ioctl_x86_get_vcpu_events
events->smi.latched_init = 0
send INIT to vcpu1
set vcpu1's pending_events
kvm_vcpu_ioctl_x86_set_vcpu_events
if (events->smi.latched_init == 0)
clear INIT in pending_events
This patch fixes it by just update SMM related flags if we are in SMM.
Thanks Peng Hao for the report and original commit message.
Reported-by: Peng Hao <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Radim Krčmář <[email protected]>
Signed-off-by: Wanpeng Li <[email protected]>
Reviewed-by: Paolo Bonzini <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions