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KVM: s390: introduce kvm_s390_vcpu_{start,stop}

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This patch introduces two new functions to set/clear the CPUSTAT_STOPPED bit and
makes use of it at all applicable places. These functions prepare the additional
execution of code when starting/stopping a vcpu.

The CPUSTAT_STOPPED bit should not be touched outside of these functions.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand
2014-03-14 10:59:29 +01:00
committed by Christian Borntraeger
parent e45efa28e5
commit 6852d7b69b
6 changed files with 40 additions and 6 deletions
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2
arch/s390/kvm/interrupt.c
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@@ -413,7 +413,7 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
rc |= read_guest_lc(vcpu, offsetof(struct _lowcore, restart_psw),
&vcpu->arch.sie_block->gpsw,
sizeof(psw_t));
atomic_clear_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags);
kvm_s390_vcpu_start(vcpu);
break;
case KVM_S390_PROGRAM_INT:
VCPU_EVENT(vcpu, 4, "interrupt: pgm check code:%x, ilc:%x",