Rename the old __vcpu_run to vcpu_run, and extract its main logic
to a new function.
The next patch will add a new early-exit condition to __vcpu_run,
avoid extra indentation.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
arch/x86/kvm/x86.c | 67 +++++++++++++++++++++++++++++-------------------------
1 file changed, 36 insertions(+), 31 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index bd7a70be41b3..0b8dd13676ef 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6165,7 +6165,7 @@ void kvm_arch_mmu_notifier_invalidate_page(struct kvm
*kvm,
}
/*
- * Returns 1 to let __vcpu_run() continue the guest execution loop without
+ * Returns 1 to let vcpu_run() continue the guest execution loop without
* exiting to the userspace. Otherwise, the value will be returned to the
* userspace.
*/
@@ -6383,42 +6383,45 @@ out:
return r;
}
+static inline int __vcpu_run(struct kvm *kvm, struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
+ !vcpu->arch.apf.halted)
+ return vcpu_enter_guest(vcpu);
+
+ srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
+ kvm_vcpu_block(vcpu);
+ vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
+ if (!kvm_check_request(KVM_REQ_UNHALT, vcpu))
+ return 1;
-static int __vcpu_run(struct kvm_vcpu *vcpu)
+ kvm_apic_accept_events(vcpu);
+ switch(vcpu->arch.mp_state) {
+ case KVM_MP_STATE_HALTED:
+ vcpu->arch.pv.pv_unhalted = false;
+ vcpu->arch.mp_state =
+ KVM_MP_STATE_RUNNABLE;
+ case KVM_MP_STATE_RUNNABLE:
+ vcpu->arch.apf.halted = false;
+ break;
+ case KVM_MP_STATE_INIT_RECEIVED:
+ break;
+ default:
+ return -EINTR;
+ break;
+ }
+ return 1;
+}
+
+static int vcpu_run(struct kvm_vcpu *vcpu)
{
int r;
struct kvm *kvm = vcpu->kvm;
vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
- r = 1;
- while (r > 0) {
- if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
- !vcpu->arch.apf.halted)
- r = vcpu_enter_guest(vcpu);
- else {
- srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
- kvm_vcpu_block(vcpu);
- vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
- if (kvm_check_request(KVM_REQ_UNHALT, vcpu)) {
- kvm_apic_accept_events(vcpu);
- switch(vcpu->arch.mp_state) {
- case KVM_MP_STATE_HALTED:
- vcpu->arch.pv.pv_unhalted = false;
- vcpu->arch.mp_state =
- KVM_MP_STATE_RUNNABLE;
- case KVM_MP_STATE_RUNNABLE:
- vcpu->arch.apf.halted = false;
- break;
- case KVM_MP_STATE_INIT_RECEIVED:
- break;
- default:
- r = -EINTR;
- break;
- }
- }
- }
-
+ for (;;) {
+ r = __vcpu_run(kvm, vcpu);
if (r <= 0)
break;
@@ -6430,6 +6433,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
r = -EINTR;
vcpu->run->exit_reason = KVM_EXIT_INTR;
++vcpu->stat.request_irq_exits;
+ break;
}
kvm_check_async_pf_completion(vcpu);
@@ -6438,6 +6442,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
r = -EINTR;
vcpu->run->exit_reason = KVM_EXIT_INTR;
++vcpu->stat.signal_exits;
+ break;
}
if (need_resched()) {
srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
@@ -6569,7 +6574,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct
kvm_run *kvm_run)
} else
WARN_ON(vcpu->arch.pio.count || vcpu->mmio_needed);
- r = __vcpu_run(vcpu);
+ r = vcpu_run(vcpu);
out:
post_kvm_run_save(vcpu);
--
1.8.3.1
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