Re: [PATCH v3] PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX

[Bjorn Helgaas <helgaas@kernel.org>]

On Tue, Jul 21, 2026 at 12:47:07PM +0000, Lin Mohan wrote:
> Hi Bjorn,
> 
> I am Lin Mohan, the reporter of
> https://bugzilla.kernel.org/show_bug.cgi?id=221137.
> 
> Since commit 22b47bd49e45 ("PCI: vmd: Handle BUS_RESTRICT_CFG value 3
> for Arrow Lake-HX") has already been merged, could you please add the
> following tags in a follow-up fix?
> 
> Reported-by: Lin Mohan <linmhwork@outlook.com>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221137
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221136
> 
> This patch fixes the same Mode 3 / Dynamic Bus Offset issue I
> reported on the 8086:09ab VMD device (Arrow Lake-S).

Thanks very much for confirming this!

I added the tags to the commit on pci/controller/vmd.

I do still question whether that commit includes sufficient support
for this Mode 3 feature, so I'm hoping Nirmal or someone else from
Intel will chime in.