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kvm-irqchip: x86: add msi route notify fn

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One more IEC notifier is added to let msi routes know about the IEC
changes. When interrupt invalidation happens, all registered msi routes
will be updated for all PCI devices.

Since both vfio and vhost are possible gsi route consumers, this patch
will go one step further to keep them safe in split irqchip mode and
when irqfd is enabled.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
[move trace-events lines into target-i386/trace-events]
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Peter Xu 2016-07-14 13:56:32 +08:00 • committed by Michael S. Tsirkin
parent 38d87493f3
commit e1d4fb2de5
5 changed files with 49 additions and 9 deletions
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10
kvm-all.c
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@ -1246,15 +1246,7 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
MSIMessage msg = {0, 0};
if (dev) {
if (msix_enabled(dev)) {
msg = msix_get_message(dev, vector);
} else if (msi_enabled(dev)) {
msg = msi_get_message(dev, vector);
} else {
/* Should never happen */
error_report("%s: unknown interrupt type", __func__);
abort();
}
msg = pci_get_msi_message(dev, vector);
}
if (kvm_gsi_direct_mapping()) {