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authorFeng Wu <feng.wu@intel.com>2015-09-18 22:29:53 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2015-10-01 15:06:47 +0200
commitf70c20aaf141adb715a2d750c55154073b02a9c3 (patch)
tree47bca098ae2da44022af8b04f58d44089cd7ef80 /virt
parent9016cfb577a15abd6a7990890ccf6bf1edf04d31 (diff)
downloadlinux-linaro-stable-f70c20aaf141adb715a2d750c55154073b02a9c3.tar.gz
KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'
This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/eventfd.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 7df356d8f1fd..b637965746bb 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -266,6 +266,13 @@ void __attribute__((weak)) kvm_arch_irq_bypass_start(
struct irq_bypass_consumer *cons)
{
}
+
+int __attribute__((weak)) kvm_arch_update_irqfd_routing(
+ struct kvm *kvm, unsigned int host_irq,
+ uint32_t guest_irq, bool set)
+{
+ return 0;
+}
#endif
static int
@@ -586,9 +593,19 @@ void kvm_irq_routing_update(struct kvm *kvm)
spin_lock_irq(&kvm->irqfds.lock);
- list_for_each_entry(irqfd, &kvm->irqfds.items, list)
+ list_for_each_entry(irqfd, &kvm->irqfds.items, list) {
irqfd_update(kvm, irqfd);
+#ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
+ if (irqfd->producer) {
+ int ret = kvm_arch_update_irqfd_routing(
+ irqfd->kvm, irqfd->producer->irq,
+ irqfd->gsi, 1);
+ WARN_ON(ret);
+ }
+#endif
+ }
+
spin_unlock_irq(&kvm->irqfds.lock);
}