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Re: [PATCH for-4.17?] x86/pvh: report ACPI VFCT table to dom0 if present
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 8 Nov 2022 17:31:01 +0100
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- Cc: Henry.Wang@xxxxxxx, ray.huang@xxxxxxx, Alexander.Deucher@xxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
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On Tue, Nov 08, 2022 at 04:56:17PM +0100, Jan Beulich wrote:
> On 08.11.2022 14:55, Roger Pau Monne wrote:
> > The VFCT ACPI table is used by AMD GPUs to expose the vbios ROM image
> > from the firmware instead of doing it on the PCI ROM on the physical
> > device.
>
> I can't find any mention of VFCT in the ACPI 6.3 spec, nor anywhere
> under Linux'es include/acpi/. I don't mind the addition that you're
> doing, but there needs to be a pointer to a sufficiently "official"
> spec.
I've also asked for some kind of official spec, as I would assume it
should be in:
https://uefi.org/acpi
With the rest of tables not in the spec itself, but there's none.
I could add a link to the Linux header, but that's suboptimal IMO.
Are you fine with this as-is, or would you like me to elaborate about
the lack of an official spec in the commit description?
Thanks, Roger.
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