Thread (4 messages) 4 messages, 3 authors, 2021-09-30

[dpdk-dev] [PATCH] bus/pci: fix unknown NUMA node value on Windows

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From: Pallavi Kadam <hidden>
Date: 2021-09-27 18:15:36
Subsystem: the rest · Maintainer: Linus Torvalds

Based on the rte_eth_dev_socket_id() documentation,
set the default numa_node to -1. When the API is unsuccessful,
set numa_node to 0.
This change more correctly resembles the Linux code.

Fixes: bf7cf1f947bd ("bus/pci: fix unknown NUMA node value on Windows")
Cc: stable@dpdk.org

Reported-by: Vipin Varghese <redacted>
Signed-off-by: Pallavi Kadam <redacted>
---
 drivers/bus/pci/windows/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/pci/windows/pci.c b/drivers/bus/pci/windows/pci.c
index 343ef6f33b..644c452c76 100644
--- a/drivers/bus/pci/windows/pci.c
+++ b/drivers/bus/pci/windows/pci.c
@@ -237,6 +237,7 @@ get_device_resource_info(HDEVINFO dev_info,
 	}
 
 	/* Get NUMA node using DEVPKEY_Device_Numa_Node */
+	dev->device.numa_node = SOCKET_ID_ANY;
 	res = SetupDiGetDevicePropertyW(dev_info, dev_info_data,
 		&DEVPKEY_Device_Numa_Node, &property_type,
 		(BYTE *)&numa_node, sizeof(numa_node), NULL, 0);
@@ -244,7 +245,7 @@ get_device_resource_info(HDEVINFO dev_info,
 		DWORD error = GetLastError();
 		if (error == ERROR_NOT_FOUND) {
 			/* On older CPUs, NUMA is not bound to PCIe locality. */
-			dev->device.numa_node = SOCKET_ID_ANY;
+			dev->device.numa_node = 0;
 			return ERROR_SUCCESS;
 		}
 		RTE_LOG_WIN32_ERR("SetupDiGetDevicePropertyW"
-- 
2.31.1.windows.1
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