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KVM: Simplify vcpu_enter_guest() mmu reload logic slightly 

No need to reload the mmu in between two different vcpu->requests checks.

kvm_mmu_reload() may trigger KVM_REQ_TRIPLE_FAULT, but that will be caught
during atomic guest entry later.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Avi Kivity 2010-06-23 14:26:18 +03:00
parent 529df65e39
commit 3e00750947
1 changed files with 5 additions and 7 deletions
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12
arch/x86/kvm/x86.c
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@ -4616,15 +4616,9 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
bool req_int_win = !irqchip_in_kernel(vcpu->kvm) &&
vcpu->run->request_interrupt_window;
if (vcpu->requests)
if (vcpu->requests) {
if (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu))
kvm_mmu_unload(vcpu);
r = kvm_mmu_reload(vcpu);
if (unlikely(r))
goto out;
if (vcpu->requests) {
if (kvm_check_request(KVM_REQ_MIGRATE_TIMER, vcpu))
__kvm_migrate_timers(vcpu);
if (kvm_check_request(KVM_REQ_KVMCLOCK_UPDATE, vcpu))
@ -4649,6 +4643,10 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
}
}
r = kvm_mmu_reload(vcpu);
if (unlikely(r))
goto out;
preempt_disable();
kvm_x86_ops->prepare_guest_switch(vcpu);