* [Bug 221136] New: VMD fails on Intel Arrow Lake-S: Unknown Bus Offset Setting (3) & Incorrect SATA Class Code
@ 2026-02-25 23:42 Bjorn Helgaas
0 siblings, 0 replies; only message in thread
From: Bjorn Helgaas @ 2026-02-25 23:42 UTC (permalink / raw)
To: Nirmal Patel, Jonathan Derrick; +Cc: linux-pci
Looks related to https://bugzilla.kernel.org/show_bug.cgi?id=221130
From https://bugzilla.kernel.org/show_bug.cgi?id=221136 (reporter
bcc'd again).
> On Intel Arrow Lake-S (ARL-S) platforms (specifically using PCH VMD
> ID `8086:09ab`), the VMD driver fails to initialize correctly,
> leaving all SATA drives in RST/VMD mode invisible. The failure stems
> from three primary issues: missing support for Mode 3 bus offsets,
> an incorrect device class code reported by the SATA controller, and
> overly restrictive BAR resource checks.
There are lots more details and what looks like a modified vmd.c (not
a patch) to fix the problem in the bugzilla.
Lin, thanks a lot for your work in discovering, debugging, and
proposing a fix for this issue.
If you start here:
https://www.kernel.org/doc/html/latest/process/submitting-patches.html
and skim some other patches at https://lore.kernel.org/linux-pci/,
you'll see the usual process for submitting Linux kernel patches.
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2026-02-25 23:42 [Bug 221136] New: VMD fails on Intel Arrow Lake-S: Unknown Bus Offset Setting (3) & Incorrect SATA Class Code Bjorn Helgaas
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