diff options
| author | Wanpeng Li <wanpengli@tencent.com> | 2021-04-28 19:08:02 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-05-03 11:25:35 -0400 |
| commit | d981dd15498b188636ec5a7d8ad485e650f63d8d (patch) | |
| tree | 449a9fab29eefb9997130f34620e0ce0fd418698 /virt | |
| 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 <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1619608082-4187-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions