diff options
Diffstat (limited to 'arch/x86/kvm/lapic.h')
| -rw-r--r-- | arch/x86/kvm/lapic.h | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index 73fa299b68e8..2ad9caa06f94 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -55,8 +55,6 @@ int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type); u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data); void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu); -int kvm_lapic_enabled(struct kvm_vcpu *vcpu); -bool kvm_apic_present(struct kvm_vcpu *vcpu); int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu); u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu); @@ -79,4 +77,47 @@ static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu) int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data); void kvm_lapic_init(void); + +static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off) +{ + return *((u32 *) (apic->regs + reg_off)); +} + +extern struct static_key kvm_no_apic_vcpu; + +static inline bool kvm_vcpu_has_lapic(struct kvm_vcpu *vcpu) +{ + if (static_key_false(&kvm_no_apic_vcpu)) + return vcpu->arch.apic; + return true; +} + +extern struct static_key_deferred apic_hw_disabled; + +static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic) +{ + if (static_key_false(&apic_hw_disabled.key)) + return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE; + return MSR_IA32_APICBASE_ENABLE; +} + +extern struct static_key_deferred apic_sw_disabled; + +static inline int kvm_apic_sw_enabled(struct kvm_lapic *apic) +{ + if (static_key_false(&apic_sw_disabled.key)) + return kvm_apic_get_reg(apic, APIC_SPIV) & APIC_SPIV_APIC_ENABLED; + return APIC_SPIV_APIC_ENABLED; +} + +static inline bool kvm_apic_present(struct kvm_vcpu *vcpu) +{ + return kvm_vcpu_has_lapic(vcpu) && kvm_apic_hw_enabled(vcpu->arch.apic); +} + +static inline int kvm_lapic_enabled(struct kvm_vcpu *vcpu) +{ + return kvm_apic_present(vcpu) && kvm_apic_sw_enabled(vcpu->arch.apic); +} + #endif |
