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authorJan Kiszka <jan.kiszka@siemens.com>2012-03-29 21:14:12 +0200
committerAvi Kivity <avi@redhat.com>2012-04-24 15:59:47 +0300
commit07975ad3b30579ca27d880491ad992326b930c63 (patch)
treefea166a02c387949a09a948a51781074bdc9ed68 /arch/x86/kvm/Kconfig
parent1f15d10984c854e077da5aa1a23f901496b49773 (diff)
downloadlinux-linaro-stable-07975ad3b30579ca27d880491ad992326b930c63.tar.gz
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 'arch/x86/kvm/Kconfig')
-rw-r--r--arch/x86/kvm/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 1a7fe868f375..a28f338843ea 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -36,6 +36,7 @@ config KVM
select TASKSTATS
select TASK_DELAY_ACCT
select PERF_EVENTS
+ select HAVE_KVM_MSI
---help---
Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent