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| author | Gleb Natapov <gleb@redhat.com> | 2012-08-08 12:24:36 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-08-09 09:44:46 (GMT) |
| commit | 64eb0620296f924d5fded755c5ed95fb73649e06 (patch) | |
| tree | 92ee69a8fa3e55b93f093901b25f2757f5c9c471 /arch/x86/kvm/lapic.c | |
| parent | c48f14966cc41957d88c66dfe49a439e708ab7b8 (diff) | |
| download | linux-64eb0620296f924d5fded755c5ed95fb73649e06.tar.xz | |
KVM: correctly detect APIC SW state in kvm_apic_post_state_restore()
For apic_set_spiv() to track APIC SW state correctly it needs to see
previous and next values of the spurious vector register, but currently
memset() overwrite the old value before apic_set_spiv() get a chance to
do tracking. Fix it by calling apic_set_spiv() before overwriting old
value.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 333c27f..18d149d 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1389,13 +1389,16 @@ int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu) return vector; } -void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu) +void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu, + struct kvm_lapic_state *s) { struct kvm_lapic *apic = vcpu->arch.apic; kvm_lapic_set_base(vcpu, vcpu->arch.apic_base); + /* set SPIV separately to get count of SW disabled APICs right */ + apic_set_spiv(apic, *((u32 *)(s->regs + APIC_SPIV))); + memcpy(vcpu->arch.apic->regs, s->regs, sizeof *s); kvm_apic_set_version(vcpu); - apic_set_spiv(apic, kvm_apic_get_reg(apic, APIC_SPIV)); apic_update_ppr(apic); hrtimer_cancel(&apic->lapic_timer.timer); |