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 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html