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authorJan Kiszka <jan.kiszka@siemens.com>2012-03-29 23:14:12 +0400
committerAvi Kivity <avi@redhat.com>2012-04-24 16:59:47 +0400
commit07975ad3b30579ca27d880491ad992326b930c63 (patch)
treefea166a02c387949a09a948a51781074bdc9ed68 /include/linux/kvm_host.h
parent1f15d10984c854e077da5aa1a23f901496b49773 (diff)
downloadlinux-07975ad3b30579ca27d880491ad992326b930c63.tar.xz
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.h2
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) {}