Re: [libvirt] [PATCH 2/8] Add iommu group number info to virPCIDevice
n Fri, 2015-10-30 at 04:56 +0530, Shivaprasad G Bhat wrote:
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(a)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;
This can't be unsigned int, as
virPCIDeviceAddressGetIOMMUGroupNum() will return -2 if
there is no IOMMU group for the device.
/* 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:
Cheers.
--
Andrea Bolognani
Software Engineer - Virtualization Team