Commit 98300980 authored Jul 26, 2022 by Christoph Hellwig Committed by Zheng Zengkai Jul 26, 2022

nvme-pci: disable namespace identifiers for Qemu controllers

stable inclusion
from stable-v5.10.113
commit 7ec6e06ee405756f90226b946790a5a7a65795b7
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5ISAH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=7ec6e06ee405756f90226b946790a5a7a65795b7



--------------------------------

[ Upstream commit 66dd346b ]

Qemu unconditionally reports a UUID, which depending on the qemu version
is either all-null (which is incorrect but harmless) or contains a single
bit set for all controllers.  In addition it can also optionally report
a eui64 which needs to be manually set.  Disable namespace identifiers
for Qemu controlles entirely even if in some cases they could be set
correctly through manual intervention.

Reported-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>

parent 47590400

drivers/nvme/host/pci.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -3212,7 +3212,10 @@ static const struct pci_device_id nvme_id_table[] = {
		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
		{ PCI_VDEVICE(INTEL, 0x5845), /* Qemu emulated controller */
		.driver_data = NVME_QUIRK_IDENTIFY_CNS \|
		NVME_QUIRK_DISABLE_WRITE_ZEROES, },
		NVME_QUIRK_DISABLE_WRITE_ZEROES \|
		NVME_QUIRK_BOGUS_NID, },
		{ PCI_VDEVICE(REDHAT, 0x0010), /* Qemu emulated controller */
		.driver_data = NVME_QUIRK_BOGUS_NID, },
		{ PCI_DEVICE(0x126f, 0x2263), /* Silicon Motion unidentified */
		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },
		{ PCI_DEVICE(0x1bb1, 0x0100), /* Seagate Nytro Flash Storage */