diff options
| author | Wanpeng Li <[email protected]> | 2021-04-28 19:08:02 +0800 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-05-03 11:25:35 -0400 |
| commit | d981dd15498b188636ec5a7d8ad485e650f63d8d (patch) | |
| tree | 449a9fab29eefb9997130f34620e0ce0fd418698 /tools/perf/scripts/python | |
| parent | 1699f65c8b658d434fe92563c906cd1a136c9cb6 (diff) | |
KVM: LAPIC: Accurately guarantee busy wait for timer to expire when using hv_timer
Commit ee66e453db13d (KVM: lapic: Busy wait for timer to expire when
using hv_timer) tries to set ktime->expired_tscdeadline by checking
ktime->hv_timer_in_use since lapic timer oneshot/periodic modes which
are emulated by vmx preemption timer also get advanced, they leverage
the same vmx preemption timer logic with tsc-deadline mode. However,
ktime->hv_timer_in_use is cleared before apic_timer_expired() handling,
let's delay this clearing in preemption-disabled region.
Fixes: ee66e453db13d ("KVM: lapic: Busy wait for timer to expire when using hv_timer")
Reviewed-by: Sean Christopherson <[email protected]>
Signed-off-by: Wanpeng Li <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions