[dpdk-stable] [PATCH] pci/windows: do not fail on missing NUMA node for PCIe

Tal Shnaiderman talshn at nvidia.com
Sun Dec 13 15:16:04 CET 2020


On older processors, NUMA isn't bound to PCIe locality.
those cases return ERROR_NOT_FOUND in response to the
SetupDiGetDevicePropertyW call with DEVPKEY_Device_Numa_Node
attribute.

This error fails the probe process for the PCIe device.
this commit will ignore such failure and will set the
numa_node to 0.

Fixes: b762221ac24f ("bus/pci: support Windows with bifurcated drivers")
Cc: stable at dpdk.org

Reported-by: Odi Assli <odia at nvidia.com>
Signed-off-by: Tal Shnaiderman <talshn at nvidia.com>
---
 drivers/bus/pci/windows/pci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/bus/pci/windows/pci.c b/drivers/bus/pci/windows/pci.c
index 33a5fb1d83..62bac4b8ec 100644
--- a/drivers/bus/pci/windows/pci.c
+++ b/drivers/bus/pci/windows/pci.c
@@ -234,6 +234,15 @@ get_device_resource_info(HDEVINFO dev_info,
 		&DEVPKEY_Device_Numa_Node, &property_type,
 		(BYTE *)&numa_node, sizeof(numa_node), NULL, 0);
 	if (!res) {
+		DWORD error = GetLastError();
+		if (error == ERROR_NOT_FOUND) {
+			/* On older CPUs, NUMA isn't bound to PCIe locality
+			 * We do not want to fail the probing process
+			 * Setting 0 for numa_node and returnng ERROR_SUCCESS.
+			 */
+			dev->device.numa_node = 0;
+			return ERROR_SUCCESS;
+		}
 		RTE_LOG_WIN32_ERR("SetupDiGetDevicePropertyW"
 			"(DEVPKEY_Device_Numa_Node)");
 		return -1;
-- 
2.16.1.windows.4



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