Messages in this thread Patch in this message | | | From | Wanpeng Li <> | Subject | [PATCH 2/2] KVM: lapic: don't recalculate apic map table twice when enabling LAPIC | Date | Wed, 3 Aug 2016 12:04:13 +0800 |
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From: Wanpeng Li <wanpeng.li@hotmail.com>
APIC map table is recalculated during reset APIC ID to the initial value when enabling LAPIC. This patch move the recalculate_apic_map() to the next branch since we don't need to recalculate apic map twice in current codes.
Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> --- arch/x86/kvm/lapic.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 0120a58..d676f4b 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1760,9 +1760,10 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value) if (value & MSR_IA32_APICBASE_ENABLE) { kvm_apic_set_xapic_id(apic, vcpu->vcpu_id); static_key_slow_dec_deferred(&apic_hw_disabled); - } else + } else { static_key_slow_inc(&apic_hw_disabled.key); - recalculate_apic_map(vcpu->kvm); + recalculate_apic_map(vcpu->kvm); + } } if ((old_value ^ value) & X2APIC_ENABLE) { -- 1.9.1
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