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| author | Feng Wu <feng.wu@intel.com> | 2015-09-18 22:29:53 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:47 +0200 |
| commit | f70c20aaf141adb715a2d750c55154073b02a9c3 (patch) | |
| tree | 47bca098ae2da44022af8b04f58d44089cd7ef80 | |
| parent | 9016cfb577a15abd6a7990890ccf6bf1edf04d31 (diff) | |
| download | op-kernel-dev-f70c20aaf141adb715a2d750c55154073b02a9c3.zip op-kernel-dev-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>
| -rw-r--r-- | include/linux/kvm_host.h | 2 | ||||
| -rw-r--r-- | virt/kvm/eventfd.c | 19 |
2 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b8543b0..5c3f453 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1172,5 +1172,7 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, struct irq_bypass_producer *); void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); +int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, + uint32_t guest_irq, bool set); #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ #endif diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index 7df356d..b637965 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); } |
