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authorSheng Yang <sheng@linux.intel.com>2008-11-24 14:32:56 +0800
committerAvi Kivity <avi@redhat.com>2008-12-31 16:55:02 +0200
commit6b9cc7fd469869bed38831c5adac3f59dc25eaf5 (patch)
tree63d526ff94b891116c37bf9705e42a45479271f0 /include/linux/kvm.h
parentf64769eb05565c74d7fce6fa75d65924f9cdaf79 (diff)
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KVM: Enable MSI for device assignment
We enable guest MSI and host MSI support in this patch. The userspace want to enable MSI should set KVM_DEV_IRQ_ASSIGN_ENABLE_MSI in the assigned_irq's flag. Function would return -ENOTTY if can't enable MSI, userspace shouldn't set MSI Enable bit when KVM_ASSIGN_IRQ return -ENOTTY with KVM_DEV_IRQ_ASSIGN_ENABLE_MSI. Userspace can tell the support of MSI device from #ifdef KVM_CAP_DEVICE_MSI. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include/linux/kvm.h')
-rw-r--r--include/linux/kvm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index bb283c3..0997e6f 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -392,6 +392,9 @@ struct kvm_trace_rec {
#endif
#define KVM_CAP_IOMMU 18
#define KVM_CAP_NMI 19
+#if defined(CONFIG_X86)
+#define KVM_CAP_DEVICE_MSI 20
+#endif
/*
* ioctls for VM fds
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