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| author |   Sheng Yang <sheng@linux.intel.com> | 2008-11-24 14:32:56 +0800 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2008-12-31 16:55:02 +0200 |
| commit | 6b9cc7fd469869bed38831c5adac3f59dc25eaf5 (patch) | |
| tree | 63d526ff94b891116c37bf9705e42a45479271f0 /include/linux/kvm.h | |
| parent | KVM: Add assigned_device_msi_dispatch() (diff) | |
| download | linux-dev-6b9cc7fd469869bed38831c5adac3f59dc25eaf5.tar.xz linux-dev-6b9cc7fd469869bed38831c5adac3f59dc25eaf5.zip | |
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.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index bb283c388a24..0997e6f5490c 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 |