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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2012-03-29 21:14:12 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-04-24 15:59:47 +0300 |
| commit | 07975ad3b30579ca27d880491ad992326b930c63 (patch) | |
| tree | fea166a02c387949a09a948a51781074bdc9ed68 /virt/kvm/Kconfig | |
| parent | 1f15d10984c854e077da5aa1a23f901496b49773 (diff) | |
| download | lwn-07975ad3b30579ca27d880491ad992326b930c63.tar.gz lwn-07975ad3b30579ca27d880491ad992326b930c63.zip | |
KVM: Introduce direct MSI message injection for in-kernel irqchips
Currently, MSI messages can only be injected to in-kernel irqchips by
defining a corresponding IRQ route for each message. This is not only
unhandy if the MSI messages are generated "on the fly" by user space,
IRQ routes are a limited resource that user space has to manage
carefully.
By providing a direct injection path, we can both avoid using up limited
resources and simplify the necessary steps for user land.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/Kconfig')
| -rw-r--r-- | virt/kvm/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index f63ccb0a5982..28694f4a9139 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -18,3 +18,6 @@ config KVM_MMIO config KVM_ASYNC_PF bool + +config HAVE_KVM_MSI + bool |