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| author | Michael S. Tsirkin <mst@redhat.com> | 2009-07-26 17:10:01 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-08-05 14:03:43 +0300 |
| commit | 5116d8f6b977970ebefc1932c0f313163a6ec91f (patch) | |
| tree | 6666716c07c7c3e1ea9803350278e96e02fbf16a | |
| parent | d3bc2f91b4761a8d9f96bea167fef2f8c00dea54 (diff) | |
| download | kernel_goldelico_gta04-5116d8f6b977970ebefc1932c0f313163a6ec91f.zip kernel_goldelico_gta04-5116d8f6b977970ebefc1932c0f313163a6ec91f.tar.gz kernel_goldelico_gta04-5116d8f6b977970ebefc1932c0f313163a6ec91f.tar.bz2 | |
KVM: fix ack not being delivered when msi present
kvm_notify_acked_irq does not check irq type, so that it sometimes
interprets msi vector as irq. As a result, ack notifiers are not
called, which typially hangs the guest. The fix is to track and
check irq type.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | include/linux/kvm_host.h | 1 | ||||
| -rw-r--r-- | virt/kvm/irq_comm.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 16713dc..3060bdc 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -110,6 +110,7 @@ struct kvm_memory_slot { struct kvm_kernel_irq_routing_entry { u32 gsi; + u32 type; int (*set)(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int level); union { diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index a8bd466..ddc17f0 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -160,7 +160,8 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin) unsigned gsi = pin; list_for_each_entry(e, &kvm->irq_routing, link) - if (e->irqchip.irqchip == irqchip && + if (e->type == KVM_IRQ_ROUTING_IRQCHIP && + e->irqchip.irqchip == irqchip && e->irqchip.pin == pin) { gsi = e->gsi; break; @@ -259,6 +260,7 @@ static int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e, int delta; e->gsi = ue->gsi; + e->type = ue->type; switch (ue->type) { case KVM_IRQ_ROUTING_IRQCHIP: delta = 0; |