From 76fe21dedafb0319306bc993f23e7646b139cfe4 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Tue, 3 Sep 2013 18:08:25 +1000 Subject: kvm irqfd: support direct msimessage to irq translation On PPC64 systems MSI Messages are translated to system IRQ in a PCI host bridge. This is already supported for emulated MSI/MSIX but not for irqfd where the current QEMU allocates IRQ numbers from irqchip and maps MSIMessages to IRQ in the host kernel. This adds a new direct mapping flag which tells the kvm_irqchip_add_msi_route() function that a new VIRQ should not be allocated, instead the value from MSIMessage::data should be used. It is up to the platform code to make sure that this contains a valid IRQ number as sPAPR does in spapr_pci.c. Signed-off-by: Alexey Kardashevskiy Signed-off-by: Paolo Bonzini --- kvm-stub.c | 1 + 1 file changed, 1 insertion(+) (limited to 'kvm-stub.c') diff --git a/kvm-stub.c b/kvm-stub.c index 548f471c17..e979f76d07 100644 --- a/kvm-stub.c +++ b/kvm-stub.c @@ -25,6 +25,7 @@ bool kvm_async_interrupts_allowed; bool kvm_irqfds_allowed; bool kvm_msi_via_irqfd_allowed; bool kvm_gsi_routing_allowed; +bool kvm_gsi_direct_mapping; bool kvm_allowed; bool kvm_readonly_mem_allowed; -- cgit v1.2.1