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KVM: s390: vsie: speed up VCPU irq delivery when handling vsie

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Whenever we want to wake up a VCPU (e.g. when injecting an IRQ), we
have to kick it out of vsie, so the request will be handled faster.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand
2016-05-27 22:03:52 +02:00
committed by Christian Borntraeger
parent 1b7029bec1
commit adbf16985c
4 changed files with 43 additions and 0 deletions
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5
arch/s390/kvm/interrupt.c
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@@ -995,6 +995,11 @@ void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu)
swake_up(&vcpu->wq);
vcpu->stat.halt_wakeup++;
}
/*
* The VCPU might not be sleeping but is executing the VSIE. Let's
* kick it, so it leaves the SIE to process the request.
*/
kvm_s390_vsie_kick(vcpu);
}
enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer)