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| author |   Wanpeng Li <wanpengli@tencent.com> | 2021-06-07 00:19:43 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-06-08 12:22:26 -0400 |
| commit | e898da784aed0ea65f7672d941c01dc9b79e6299 (patch) | |
| tree | 32206b1e1480ff8574a97ef8f569444858c117a4 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | KVM: SVM: Fix SEV SEND_START session length & SEND_UPDATE_DATA query length after commit 238eca821cee (diff) | |
| download | wireguard-linux-e898da784aed0ea65f7672d941c01dc9b79e6299.tar.xz wireguard-linux-e898da784aed0ea65f7672d941c01dc9b79e6299.zip | |
KVM: LAPIC: Write 0 to TMICT should also cancel vmx-preemption timer
According to the SDM 10.5.4.1:
A write of 0 to the initial-count register effectively stops the local
APIC timer, in both one-shot and periodic mode.
However, the lapic timer oneshot/periodic mode which is emulated by vmx-preemption
timer doesn't stop by writing 0 to TMICT since vmx->hv_deadline_tsc is still
programmed and the guest will receive the spurious timer interrupt later. This
patch fixes it by also cancelling the vmx-preemption timer when writing 0 to
the initial-count register.
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1623050385-100988-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions