path: root/virt/kvm/iodev.h
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authorJan Kiszka <jan.kiszka@siemens.com>2012-02-28 14:19:54 +0100
committerAvi Kivity <avi@redhat.com>2012-03-08 14:11:36 +0200
commit07700a94b00a4fcbbfb07d1b72dc112a0e036735 (patch)
treee4a8045d6a44906463102a04c7a87337c38e16aa /virt/kvm/iodev.h
parent3e515705a1f46beb1c942bb8043c16f8ac7b1e9e (diff)
KVM: Allow host IRQ sharing for assigned PCI 2.3 devices
PCI 2.3 allows to generically disable IRQ sources at device level. This enables us to share legacy IRQs of such devices with other host devices when passing them to a guest. The new IRQ sharing feature introduced here is optional, user space has to request it explicitly. Moreover, user space can inform us about its view of PCI_COMMAND_INTX_DISABLE so that we can avoid unmasking the interrupt and signaling it if the guest masked it via the virtualized PCI config space. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/iodev.h')
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