diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2013-09-03 18:08:25 +1000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-09-20 12:37:52 +0200 |
| commit | 76fe21dedafb0319306bc993f23e7646b139cfe4 (patch) | |
| tree | 7ea4f6972d46939ec16090496ad7b7201f6946dc /kvm-stub.c | |
| parent | 0e5035776df31380a44a1a851850d110b551ecb6 (diff) | |
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 <aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'kvm-stub.c')
| -rw-r--r-- | kvm-stub.c | 1 |
1 files changed, 1 insertions, 0 deletions
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; |