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 11:00:57 +0000 (12:00 +0100)
commitade1077c7fc054d1207ed6fbf3787f921af95814
tree66a50c6e9c99e828f2055fb5394068329873c36e
parent254090925e16abd914c87b4ad1b489440d89c4c3
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