Intel VMD creates secondary PCIe domain, where child devices in this
domain are aggregated behind a single end point. Linux exposes these
as special 32-bit domains, and devices in them are not individually
assignable.
This patch ignores devices in such domains as desired, and prevents
logging excessive errors, like:
internal error: dev->name buffer overflow: 10000:00:00.0
Cc: Jonathan Derrick <jonathan.derrick@xxxxxxxxx>
Signed-off-by: Keith Busch <keith.busch@xxxxxxxxx>
---
src/util/virpci.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/util/virpci.c b/src/util/virpci.c
index 55e4c3e49..53a6f2e51 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -1762,6 +1762,13 @@ virPCIDeviceNew(unsigned int domain,
char *vendor = NULL;
char *product = NULL;
+
+ /* Devices in a 32-bit domain are special. Currently applicable to Intel
+ * VMD PCIe, where individual devices are not individually assignable.
+ */
+ if (domain > USHRT_MAX)
+ return NULL;
+
if (VIR_ALLOC(dev) < 0)
return NULL;
--
2.14.3
--
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