linux-kernel - Re: SCSI hotplug issues with UEFI VM with guest kernel >= 6.5

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Message-ID: <9bcfa8a1-3da3-461a-8873-bf3963f5ffbf@leemhuis.info>
Date: Fri, 15 Dec 2023 08:41:57 +0100
From: "Linux regression tracking #update (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
 Linux kernel regressions list <regressions@...ts.linux.dev>
Cc: linux-kernel@...r.kernel.org
Subject: Re: SCSI hotplug issues with UEFI VM with guest kernel >= 6.5

[TLDR: This mail in primarily relevant for Linux kernel regression
tracking. See link in footer if these mails annoy you.]

On 29.11.23 16:22, Fiona Ebner wrote:
> it seems that hot-plugging SCSI disks for QEMU virtual machines booting
> with UEFI and with guest kernels >= 6.5 might be broken. It's not
> consistently broken, hinting there might be a race somewhere.
> 
> Reverting the following two commits seems to make it work reliably again:
> 
> cc22522fd55e2 ("PCI: acpiphp: Use
> pci_assign_unassigned_bridge_resources() only for non-root bus")
> 40613da52b13f ("PCI: acpiphp: Reassign resources on bridge if necessary"

#regzbot fix: Revert "PCI: acpiphp: Reassign resources on bridge if
necessary"
#regzbot ignore-activity

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
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