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authorAlexey Kardashevskiy <aik@ozlabs.ru>2013-09-03 18:08:25 +1000
committerPaolo Bonzini <pbonzini@redhat.com>2013-09-20 12:37:52 +0200
commit76fe21dedafb0319306bc993f23e7646b139cfe4 (patch)
tree7ea4f6972d46939ec16090496ad7b7201f6946dc /exec.c
parent0e5035776df31380a44a1a851850d110b551ecb6 (diff)
downloadqemu-76fe21dedafb0319306bc993f23e7646b139cfe4.tar.gz
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>
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