[PATCH] KVM: i8259: initialize IMR to 0xff on reset

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Otherwise, a wily interrupt can slip through while the guest isn't prepared
for it (and while the irq base is zero).

Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
 arch/x86/kvm/i8259.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 8d10c06..5de9ee0 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -275,7 +275,7 @@ void kvm_pic_reset(struct kvm_kpic_state *s)
 
 	s->last_irr = 0;
 	s->irr = 0;
-	s->imr = 0;
+	s->imr = 0xff;
 	s->isr = 0;
 	s->isr_ack = 0xff;
 	s->priority_add = 0;
-- 
1.7.1

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


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux