提交 f30ebc31 编写于 作者: R Radim Krčmář 提交者: Paolo Bonzini

KVM: x86: optimize some accesses to LVTT and SPIV

We mirror a subset of these registers in separate variables.
Using them directly should be faster.
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
上级 a323b409
......@@ -244,21 +244,17 @@ static inline int apic_lvt_vector(struct kvm_lapic *apic, int lvt_type)
static inline int apic_lvtt_oneshot(struct kvm_lapic *apic)
{
return ((kvm_apic_get_reg(apic, APIC_LVTT) &
apic->lapic_timer.timer_mode_mask) == APIC_LVT_TIMER_ONESHOT);
return apic->lapic_timer.timer_mode == APIC_LVT_TIMER_ONESHOT;
}
static inline int apic_lvtt_period(struct kvm_lapic *apic)
{
return ((kvm_apic_get_reg(apic, APIC_LVTT) &
apic->lapic_timer.timer_mode_mask) == APIC_LVT_TIMER_PERIODIC);
return apic->lapic_timer.timer_mode == APIC_LVT_TIMER_PERIODIC;
}
static inline int apic_lvtt_tscdeadline(struct kvm_lapic *apic)
{
return ((kvm_apic_get_reg(apic, APIC_LVTT) &
apic->lapic_timer.timer_mode_mask) ==
APIC_LVT_TIMER_TSCDEADLINE);
return apic->lapic_timer.timer_mode == APIC_LVT_TIMER_TSCDEADLINE;
}
static inline int apic_lvt_nmi_mode(u32 lvt_val)
......
......@@ -121,11 +121,11 @@ static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic)
extern struct static_key_deferred apic_sw_disabled;
static inline int kvm_apic_sw_enabled(struct kvm_lapic *apic)
static inline bool 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;
return apic->sw_enabled;
return true;
}
static inline bool kvm_apic_present(struct kvm_vcpu *vcpu)
......
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