[PATCH v4 02/10] Add iommu group number info to virPCIDevice

[Shivaprasad G Bhat <sbhat@xxxxxxxxxxxxxxxxxx>]

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@xxxxxxxxxxxxxxxxxx>
---
 src/util/virpci.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/util/virpci.c b/src/util/virpci.c
index bff37d7..89e69e2 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;
+    int           iommuGroup;
 
     /* used by reattach function */
     bool          unbind_from_stub;
@@ -1564,6 +1565,8 @@ virPCIDeviceNew(unsigned int domain,
     virPCIDevicePtr dev;
     char *vendor = NULL;
     char *product = NULL;
+    virPCIDeviceAddress devAddr = { domain, bus,
+                                    slot, function };
 
     if (VIR_ALLOC(dev) < 0)
         return NULL;
@@ -1611,6 +1614,8 @@ virPCIDeviceNew(unsigned int domain,
         goto error;
     }
 
+    dev->iommuGroup = virPCIDeviceAddressGetIOMMUGroupNum(&devAddr);
+
     VIR_DEBUG("%s %s: initialized", dev->id, dev->name);
 
  cleanup:

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