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| author |   Wanpeng Li <wanpengli@tencent.com> | 2019-07-18 19:39:07 +0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2019-07-20 09:00:45 +0200 |
| commit | d984740944308a310f9d33df774e2304fc1e6959 (patch) | |
| tree | 8def7ada49176186e3c3b819abad51bdb6f42f47 /arch/s390/kvm/interrupt.c | |
| parent | KVM: Boost vCPUs that are delivering interrupts (diff) | |
| download | linux-dev-d984740944308a310f9d33df774e2304fc1e6959.tar.xz linux-dev-d984740944308a310f9d33df774e2304fc1e6959.zip | |
KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
Use kvm_vcpu_wake_up() in kvm_s390_vcpu_wakeup().
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 26f8bf4a22a7..b5fd6e85657c 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -1224,28 +1224,11 @@ no_timer: void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu) { - /* - * We cannot move this into the if, as the CPU might be already - * in kvm_vcpu_block without having the waitqueue set (polling) - */ vcpu->valid_wakeup = true; + kvm_vcpu_wake_up(vcpu); + /* - * This is mostly to document, that the read in swait_active could - * be moved before other stores, leading to subtle races. - * All current users do not store or use an atomic like update - */ - smp_mb__after_atomic(); - if (swait_active(&vcpu->wq)) { - /* - * The vcpu gave up the cpu voluntarily, mark it as a good - * yield-candidate. - */ - vcpu->ready = true; - swake_up_one(&vcpu->wq); - vcpu->stat.halt_wakeup++; - } - /* - * The VCPU might not be sleeping but is executing the VSIE. Let's + * The VCPU might not be sleeping but rather executing VSIE. Let's * kick it, so it leaves the SIE to process the request. */ kvm_s390_vsie_kick(vcpu); |