[PATCH 3/3] nvme-pci: disable namespace identifiers for Qemu controllers

From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>, Sagi Grimberg <sagi@grimberg.me>
Cc: Luis Chamberlain <mcgrof@kernel.org>,
	Klaus Jensen <its@irrelevant.dk>,
	linux-nvme@lists.infradead.org
Subject: [PATCH 3/3] nvme-pci: disable namespace identifiers for Qemu controllers
Date: Tue, 12 Apr 2022 08:11:26 +0200	[thread overview]
Message-ID: <20220412061126.244414-4-hch@lst.de> (raw)
In-Reply-To: <20220412061126.244414-1-hch@lst.de>

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
corretly through manual intervention.

Reported-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/nvme/host/pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c386c91483505..b191e7dcf15ca 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3410,6 +3410,8 @@ static const struct pci_device_id nvme_id_table[] = {
 	{ PCI_VDEVICE(INTEL, 0x5845),	/* Qemu emulated controller */
 		.driver_data = NVME_QUIRK_IDENTIFY_CNS |
 				NVME_QUIRK_DISABLE_WRITE_ZEROES, },
+	{ 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 */
-- 
2.30.2


