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| author | Radim Krčmář <rkrcmar@redhat.com> | 2014-10-30 15:06:47 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-11-03 12:07:32 +0100 |
| commit | f30ebc312ca9def25650b4e1d01cdb425c310dca (patch) | |
| tree | bc3bda35500fdd10e6d2dced919633fde0c322c3 /arch/x86/kvm/lapic.c | |
| parent | a323b409820c8afd33fbd841f5534eb84b406e8d (diff) | |
| download | lwn-f30ebc312ca9def25650b4e1d01cdb425c310dca.tar.gz lwn-f30ebc312ca9def25650b4e1d01cdb425c310dca.zip | |
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: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index fa3c6f7fdca4..5f574b4add90 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -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) |