This is a note to let you know that I've just added the patch titled
KVM: s390: clear floating interrupt bitmap and parameters
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-s390-clear-floating-interrupt-bitmap-and-parameters.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f2ae45edbca7ba5324eef01719ede0151dc5cead Mon Sep 17 00:00:00 2001
From: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx>
Date: Mon, 22 Jun 2015 13:20:12 +0200
Subject: KVM: s390: clear floating interrupt bitmap and parameters
From: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx>
commit f2ae45edbca7ba5324eef01719ede0151dc5cead upstream.
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.
Signed-off-by: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/s390/kvm/interrupt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -1606,6 +1606,9 @@ void kvm_s390_clear_float_irqs(struct kv
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++)
Patches currently in stable-queue which might be from jfrei@xxxxxxxxxxxxxxxxxx are
queue-4.1/kvm-s390-clear-floating-interrupt-bitmap-and-parameters.patch
queue-4.1/kvm-s390-fix-external-call-injection-without-sigp-interpretation.patch
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