[PATCH] drivers/nvme: Add quirks for device 1cc4:6a14

[Holger Huo]

On Wednesday, April 10, 2024 11:08:58 AM +08 Keith Busch wrote:
> On Wed, Apr 10, 2024 at 10:05:46AM +0800, Holger Huo wrote:
> > On Wednesday, April 10, 2024 4:14:42 AM +08 Keith Busch wrote:
> > > On Wed, Apr 10, 2024 at 03:28:50AM +0800, Holger Huo wrote:
> > > > This commit adds NVME_QUIRK_BOGUS_NID for device [1cc4:6a14], the
> > > > Shenzhen Unionmemory Information System Ltd. RPEYJ1T24MKN2QWY PCIe
> > > > 4.0 NVMe SSD 1024GB (DRAM-less), which can be found on many Lenovo
> > > > notebooks. This SSD produces all-zero nguid.
> > > > 
> > > > Other SSDs manufatured by Shenzhen Unionmemory Information System
> > > > Ltd are likely to face similar issues, but I currently have no
> > > > device to test.
> > > 
> > > Are you using the most recent stable kernel and still need this patch?
> > > These quirks shouldn't be necessary anymore unless it's advertising
> > > multipath capabilities, and it doesn't sound like this one should be
> > > doing that.
> > 
> > Yes. My current Linux kernel version is 6.8.4 by arch. After further
> > investigation I found these quirks truly had no effects.
> > But my nvme drive still freezes with Device not ready; aborting reset,
> > CSTS=0x1 failures and AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0001
> > ...] waking from s0 (s2idle) sleep. Are there any other quirks or what
> > that I should try
> 
> I've seen the IO_PAGE_FAULT error reported before, but all I've heard is
> that it means the device attempts to access a memory address that it is
> not allowed to. I don't know why that would happen, though. I've never
> first hand experience with this condition, I'm just as confused.

Thanks for your help! I found this to be IOMMU related and I have to set 
AMD_IOMMU=off to have it working. This is not nvme driver related. Sorry for 
making this patch.