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| author | Gregory Haskins <ghaskins@novell.com> | 2009-05-20 10:30:49 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:41 +0300 |
| commit | 721eecbf4fe995ca94a9edec0c9843b1cc0eaaf3 (patch) | |
| tree | c759fe98a4ea5e2e2a7694e4b44a558407077290 /virt/kvm/Kconfig | |
| parent | 0ba12d10817a8db1fd7d96d3283ec6c0b294aeab (diff) | |
| download | lwn-721eecbf4fe995ca94a9edec0c9843b1cc0eaaf3.tar.gz lwn-721eecbf4fe995ca94a9edec0c9843b1cc0eaaf3.zip | |
KVM: irqfd
KVM provides a complete virtual system environment for guests, including
support for injecting interrupts modeled after the real exception/interrupt
facilities present on the native platform (such as the IDT on x86).
Virtual interrupts can come from a variety of sources (emulated devices,
pass-through devices, etc) but all must be injected to the guest via
the KVM infrastructure. This patch adds a new mechanism to inject a specific
interrupt to a guest using a decoupled eventfd mechnanism: Any legal signal
on the irqfd (using eventfd semantics from either userspace or kernel) will
translate into an injected interrupt in the guest at the next available
interrupt window.
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/Kconfig')
| -rw-r--r-- | virt/kvm/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index 79e83fc00dc7..56c6848d2df8 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -5,3 +5,7 @@ config HAVE_KVM config HAVE_KVM_IRQCHIP bool + +config HAVE_KVM_EVENTFD + bool + select EVENTFD |