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authorCarsten Otte <cotte@de.ibm.com>2012-01-04 10:25:25 +0100
committerAvi Kivity <avi@redhat.com>2012-03-05 14:52:19 +0200
commitd6b6d166864fa97ca3b1ed1a5c62fd3b53d4606f (patch)
tree6f772746ed159b26da04888c1bd0fa09e1732b71 /arch/s390/kvm
parentc0d744a9c8aae81b624e0650e6fbbbb83db1a145 (diff)
downloadop-kernel-dev-d6b6d166864fa97ca3b1ed1a5c62fd3b53d4606f.zip
op-kernel-dev-d6b6d166864fa97ca3b1ed1a5c62fd3b53d4606f.tar.gz
KVM: s390: ucontrol: disable in-kernel irq stack
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>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 0251094..5b5c28e 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -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();
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