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| author | Jan Kiszka | 2012-03-29 21:14:12 +0200 |
|---|---|---|
| committer | Avi Kivity | 2012-04-24 14:59:47 +0200 |
| commit | 07975ad3b30579ca27d880491ad992326b930c63 (patch) | |
| tree | fea166a02c387949a09a948a51781074bdc9ed68 /include/linux/kvm_host.h | |
| parent | KVM: add kvm_arch_para_features stub to asm-generic/kvm_para.h (diff) | |
| download | kernel-qcow2-linux-07975ad3b30579ca27d880491ad992326b930c63.tar.gz kernel-qcow2-linux-07975ad3b30579ca27d880491ad992326b930c63.tar.xz kernel-qcow2-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 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 186ffab0b9f0..6f343307d72b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -802,6 +802,8 @@ int kvm_set_irq_routing(struct kvm *kvm, unsigned flags); void kvm_free_irq_routing(struct kvm *kvm); +int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); + #else static inline void kvm_free_irq_routing(struct kvm *kvm) {} |