4.1-stable review patch. If anyone has any objections, please let me know.
------------------ From: Jens Freimann <[email protected]> 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 <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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++) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
