On 14.03.22 15:44, Marc Zyngier wrote:
Commit 6dce5aa59e0b ("PCI: xgene: Use inbound resources for setup") killed PCIe on my XGene-1 box (a Mustang board). The machine itself is still alive, but half of its storage (over NVMe) is gone, and the NVMe driver just times out.
Note that this machine boots with a device tree provided by the UEFI firmware (2016 vintage), which could well be non conformant with the spec, hence the breakage.
With the patch reverted, the box boots 5.17-rc8 with flying colors.
Signed-off-by: Marc Zyngier maz@kernel.org Cc: Rob Herring robh@kernel.org Cc: Toan Le toan@os.amperecomputing.com Cc: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Cc: Krzysztof Wilczyński kw@linux.com Cc: Bjorn Helgaas bhelgaas@google.com Cc: Stéphane Graber stgraber@ubuntu.com Cc: dann frazier dann.frazier@canonical.com Cc: Thorsten Leemhuis regressions@leemhuis.info
Feel free to drop me there. But could you please instead add a 'Link:' tag pointing to the report for anyone wanting to look into the backstory in the future, as explained in 'Documentation/process/submitting-patches.rst' and 'Documentation/process/5.Posting.rst'? E.g. like this:
"Link: https://lore.kernel.org/r/Yf2wTLjmcRj%2BAbDv@xps13.dannf/"
FWIW, I care for another reason: I'm tracking this regression with regzbot, my regression tracking bot. Proper "Link:" tags allow the bot to connect regression reports with fixes being posted or applied to resolve the regression -- which makes regression tracking a whole lot easier.
While at it, let me tell regzbot about this thread: #regzbot ^backmonitor: https://lore.kernel.org/r/Yf2wTLjmcRj%2BAbDv@xps13.dannf/
Cc: stable@vger.kernel.org>
Typo, missing a "<"
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
P.S.: As the Linux kernel's regression tracker I'm getting a lot of reports on my table. I can only look briefly into most of them and lack knowledge about most of the areas they concern. I thus unfortunately will sometimes get things wrong or miss something important. I hope that's not the case here; if you think it is, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.