KVM: enable PCI multiple-segments for pass-through device

Enable optional parameter (default 0) - PCI segment (or domain) besides
BDF, when assigning PCI device to guest.

Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 4c4937e7f65f..dfa54be881f4 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -500,6 +500,7 @@ struct kvm_ioeventfd {
 #define KVM_CAP_HYPERV 44
 #define KVM_CAP_HYPERV_VAPIC 45
 #define KVM_CAP_HYPERV_SPIN 46
+#define KVM_CAP_PCI_SEGMENT 47
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -694,8 +695,9 @@ struct kvm_assigned_pci_dev {
         __u32 busnr;
         __u32 devfn;
         __u32 flags;
+        __u32 segnr;
         union {
-                __u32 reserved[12];
+                __u32 reserved[11];
         };
 };
 
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index dfde04b0d453..665c37063f30 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -400,6 +400,7 @@ struct kvm_assigned_dev_kernel {
         struct work_struct interrupt_work;
         struct list_head list;
         int assigned_dev_id;
+        int host_segnr;
         int host_busnr;
         int host_devfn;
         unsigned int entries_nr;