[libvirt] [PATCH 2/8] Add iommu group number info to virPCIDevice

[Shivaprasad G Bhat]

The iommu group number need not be fetched from the sysfs
everytime as it remains constant. Fetch it once during
allocation

Signed-off-by: Shivaprasad G Bhat <sbhat at linux.vnet.ibm.com>
---
 src/util/virpci.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/util/virpci.c b/src/util/virpci.c
index 5acf486..eba285a 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -75,6 +75,7 @@ struct _virPCIDevice {
     bool          has_pm_reset;
     bool          managed;
     char          *stubDriver;
+    unsigned int  iommuGroup;
 
     /* used by reattach function */
     bool          unbind_from_stub;
@@ -1565,6 +1566,8 @@ virPCIDeviceNew(unsigned int domain,
     char *product = NULL;
     char *drvpath = NULL;
     char *driver = NULL;
+    virPCIDeviceAddress devAddr = { domain, bus,
+                                    slot, function };
 
     if (VIR_ALLOC(dev) < 0)
         return NULL;
@@ -1618,6 +1621,8 @@ virPCIDeviceNew(unsigned int domain,
     if (virPCIIsAKnownStub(driver))
         dev->stubDriver = driver;
 
+    dev->iommuGroup = virPCIDeviceAddressGetIOMMUGroupNum(&devAddr);
+
     VIR_DEBUG("%s %s: initialized", dev->id, dev->name);
 
  cleanup: