diff options
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 6d72d8f43310..ba5a27879f1d 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1410,6 +1410,9 @@ int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len, if (!apic_x2apic_mode(apic)) valid_reg_mask |= APIC_REG_MASK(APIC_ARBPRI); + if (alignment + len > 4) + return 1; + if (offset > 0x3f0 || !(valid_reg_mask & APIC_REG_MASK(offset))) return 1; @@ -2628,6 +2631,7 @@ int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s) apic_manage_nmi_watchdog(apic, kvm_lapic_get_reg(apic, APIC_LVT0)); update_divide_count(apic); __start_apic_timer(apic, APIC_TMCCT); + kvm_lapic_set_reg(apic, APIC_TMCCT, 0); kvm_apic_update_apicv(vcpu); apic->highest_isr_cache = -1; if (vcpu->arch.apicv_active) { @@ -2869,7 +2873,7 @@ int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data, unsigned long len) return kvm_gfn_to_hva_cache_init(vcpu->kvm, ghc, addr, new_len); } -void kvm_apic_accept_events(struct kvm_vcpu *vcpu) +int kvm_apic_accept_events(struct kvm_vcpu *vcpu) { struct kvm_lapic *apic = vcpu->arch.apic; u8 sipi_vector; @@ -2877,7 +2881,7 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) unsigned long pe; if (!lapic_in_kernel(vcpu)) - return; + return 0; /* * Read pending events before calling the check_events @@ -2885,12 +2889,12 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) */ pe = smp_load_acquire(&apic->pending_events); if (!pe) - return; + return 0; if (is_guest_mode(vcpu)) { r = kvm_check_nested_events(vcpu); if (r < 0) - return; + return r == -EBUSY ? 0 : r; /* * If an event has happened and caused a vmexit, * we know INITs are latched and therefore @@ -2911,7 +2915,7 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) WARN_ON_ONCE(vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED); if (test_bit(KVM_APIC_SIPI, &pe)) clear_bit(KVM_APIC_SIPI, &apic->pending_events); - return; + return 0; } if (test_bit(KVM_APIC_INIT, &pe)) { @@ -2932,6 +2936,7 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; } } + return 0; } void kvm_lapic_exit(void) |