PCI: hv: Fix NUMA node assignment when kernel boots with custom NUMA topology
authorLong Li <longli@microsoft.com>
Thu, 27 Jan 2022 01:43:34 +0000 (17:43 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 23 Feb 2022 11:03:04 +0000 (12:03 +0100)
commitc7a4b1d155d3d32cabfc64d8dbc30ceb3b8efc99
tree02c6cee12352dd7f395e855b977dfd6fde819f0b
parent7da6ba116cdc5efd2b0b13ba4aba46e94669d313
PCI: hv: Fix NUMA node assignment when kernel boots with custom NUMA topology

commit 3149efcdf2c6314420c418dfc94de53bfd076b1f upstream.

When kernel boots with a NUMA topology with some NUMA nodes offline, the PCI
driver should only set an online NUMA node on the device. This can happen
during KDUMP where some NUMA nodes are not made online by the KDUMP kernel.

This patch also fixes the case where kernel is booting with "numa=off".

Fixes: 999dd956d838 ("PCI: hv: Add support for protocol 1.3 and support PCI_BUS_RELATIONS2")
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Purna Pavan Chandra Aekkaladevi <paekkaladevi@microsoft.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Link: https://lore.kernel.org/r/1643247814-15184-1-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/pci/controller/pci-hyperv.c