hisi_acc_vfio_pci: fix the queue parameter anomaly issue

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[ Upstream commit c3cbc276c2 ]

When the number of QPs initialized by the device, as read via vft, is zero,
it indicates either an abnormal device configuration or an abnormal read
result.
Returning 0 directly in this case would allow the live migration operation
to complete successfully, leading to incorrect parameter configuration after
migration and preventing the service from recovering normal functionality.
Therefore, in such situations, an error should be returned to roll back the
live migration operation.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Link: https://lore.kernel.org/r/20260122020205.2884497-5-liulongfang@huawei.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Longfang Liu 2026-01-22 10:02:05 +08:00 • committed by Sasha Levin

parent 61ad70c6c9

commit 7b7516ac61

1 changed files with 1 additions and 1 deletions

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drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c

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