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authorSheng Yang <sheng@linux.intel.com>2009-02-25 12:22:26 +0300
committerAvi Kivity <avi@redhat.com>2009-06-10 12:48:23 +0400
commitc1e01514296e8a4a43ff0c88dcff635cb90feb5f (patch)
tree299a54da71c4900fc3b71840e2c6eec98b35f8b4 /include/linux/kvm.h
parentbfd349d073b2838a6a031f057d25e266619b7093 (diff)
downloadlinux-c1e01514296e8a4a43ff0c88dcff635cb90feb5f.tar.xz
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.h18
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