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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 14:59:47 +0200 |
| commit | 07975ad3b30579ca27d880491ad992326b930c63 (patch) | |
| tree | fea166a02c387949a09a948a51781074bdc9ed68 /arch/x86/kvm | |
| parent | KVM: add kvm_arch_para_features stub to asm-generic/kvm_para.h (diff) | |
| download | linux-07975ad3b30579ca27d880491ad992326b930c63.tar.xz linux-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 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/Kconfig | 1 |
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 |