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KVM: s390: clear floating interrupt bitmap and parameters

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commit 6d3da24141 ("KVM: s390: deliver floating interrupts in order
of priority") introduced a regression for the reset handling.

We don't clear the bitmap of pending floating interrupts
and interrupt parameters. This could result in stale interrupts
even after a reset. Let's fix this by clearing the pending bitmap
and the parameters for service and machine check interrupts.

Cc: stable@vger.kernel.org # 4.1
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jens Freimann 2015-06-22 13:20:12 +02:00 committed by Paolo Bonzini
parent 6912ac326d
commit f2ae45edbc
1 changed files with 3 additions and 0 deletions
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3
arch/s390/kvm/interrupt.c
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@ -1621,6 +1621,9 @@ void kvm_s390_clear_float_irqs(struct kvm *kvm)
int i;
spin_lock(&fi->lock);
fi->pending_irqs = 0;
memset(&fi->srv_signal, 0, sizeof(fi->srv_signal));
memset(&fi->mchk, 0, sizeof(fi->mchk));
for (i = 0; i < FIRQ_LIST_COUNT; i++)
clear_irq_list(&fi->lists[i]);
for (i = 0; i < FIRQ_MAX_COUNT; i++)