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KVM: s390: ucontrol: disable in-kernel irq stack

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This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Carsten Otte 2012-01-04 10:25:25 +01:00 committed by Avi Kivity
parent c0d744a9c8
commit d6b6d16686
1 changed files with 2 additions and 1 deletions
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3
arch/s390/kvm/kvm-s390.c
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@ -505,7 +505,8 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
if (test_thread_flag(TIF_MCCK_PENDING))
s390_handle_mcck();
kvm_s390_deliver_pending_interrupts(vcpu);
if (!kvm_is_ucontrol(vcpu->kvm))
kvm_s390_deliver_pending_interrupts(vcpu);
vcpu->arch.sie_block->icptcode = 0;
local_irq_disable();