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| author |   Sheng Yang <sheng@linux.intel.com> | 2009-02-25 17:22:26 +0800 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2009-06-10 11:48:23 +0300 |
| commit | c1e01514296e8a4a43ff0c88dcff635cb90feb5f (patch) | |
| tree | 299a54da71c4900fc3b71840e2c6eec98b35f8b4 /include/linux/kvm.h | |
| parent | KVM: bit ops for deliver_bitmap (diff) | |
| download | linux-dev-c1e01514296e8a4a43ff0c88dcff635cb90feb5f.tar.xz linux-dev-c1e01514296e8a4a43ff0c88dcff635cb90feb5f.zip | |
KVM: Ioctls for init MSI-X entry
Introduce KVM_SET_MSIX_NR and KVM_SET_MSIX_ENTRY two ioctls.
This two ioctls are used by userspace to specific guest device MSI-X entry
number and correlate MSI-X entry with GSI during the initialization stage.
MSI-X should be well initialzed before enabling.
Don't support change MSI-X entry number for now.
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 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 8cc137911b34..78cdee8c6355 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -487,6 +487,10 @@ struct kvm_irq_routing { #define KVM_REINJECT_CONTROL _IO(KVMIO, 0x71) #define KVM_DEASSIGN_PCI_DEVICE _IOW(KVMIO, 0x72, \ struct kvm_assigned_pci_dev) +#define KVM_ASSIGN_SET_MSIX_NR \ + _IOW(KVMIO, 0x73, struct kvm_assigned_msix_nr) +#define KVM_ASSIGN_SET_MSIX_ENTRY \ + _IOW(KVMIO, 0x74, struct kvm_assigned_msix_entry) /* * ioctls for vcpu fds @@ -607,4 +611,18 @@ struct kvm_assigned_irq { #define KVM_DEV_IRQ_ASSIGN_MSI_ACTION KVM_DEV_IRQ_ASSIGN_ENABLE_MSI #define KVM_DEV_IRQ_ASSIGN_ENABLE_MSI (1 << 0) +struct kvm_assigned_msix_nr { + __u32 assigned_dev_id; + __u16 entry_nr; + __u16 padding; +}; + +#define KVM_MAX_MSIX_PER_DEV 512 +struct kvm_assigned_msix_entry { + __u32 assigned_dev_id; + __u32 gsi; + __u16 entry; /* The index of entry in the MSI-X table */ + __u16 padding[3]; +}; + #endif |