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LoongArch: KVM: Check kvm_request_pending() in kvm_late_check_requests()

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Add kvm_request_pending() checking firstly in kvm_late_check_requests(),
at most time there is no pending request, then the following pending bit
checking can be skipped.

Also embed function kvm_check_pmu() in to kvm_late_check_requests(), and
put it after the kvm_request_pending() checking.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Bibo Mao
2026-04-09 18:56:36 +08:00
committed by Huacai Chen
parent da773ea3f5
commit 14d2714d65
1 changed files with 9 additions and 9 deletions
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18
arch/loongarch/kvm/vcpu.c
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@@ -149,14 +149,6 @@ static void kvm_lose_pmu(struct kvm_vcpu *vcpu)
kvm_restore_host_pmu(vcpu);
}
static void kvm_check_pmu(struct kvm_vcpu *vcpu)
{
if (kvm_check_request(KVM_REQ_PMU, vcpu)) {
kvm_own_pmu(vcpu);
vcpu->arch.aux_inuse |= KVM_LARCH_PMU;
}
}
static void kvm_update_stolen_time(struct kvm_vcpu *vcpu)
{
u32 version;
@@ -232,6 +224,15 @@ static int kvm_check_requests(struct kvm_vcpu *vcpu)
static void kvm_late_check_requests(struct kvm_vcpu *vcpu)
{
lockdep_assert_irqs_disabled();
if (!kvm_request_pending(vcpu))
return;
if (kvm_check_request(KVM_REQ_PMU, vcpu)) {
kvm_own_pmu(vcpu);
vcpu->arch.aux_inuse |= KVM_LARCH_PMU;
}
if (kvm_check_request(KVM_REQ_TLB_FLUSH_GPA, vcpu))
if (vcpu->arch.flush_gpa != INVALID_GPA) {
kvm_flush_tlb_gpa(vcpu, vcpu->arch.flush_gpa);
@@ -312,7 +313,6 @@ static int kvm_pre_enter_guest(struct kvm_vcpu *vcpu)
/* Make sure the vcpu mode has been written */
smp_store_mb(vcpu->mode, IN_GUEST_MODE);
kvm_check_vpid(vcpu);
kvm_check_pmu(vcpu);
/*
* Called after function kvm_check_vpid()