linux-kernel - Re: PCI IO ECS access is no longer possible for AMD family 17h

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Message-ID: <CAJDH93uXuR8cWSnUgOWwi=JNuS543mHLPJb9UUac2g=K4bFMSQ@mail.gmail.com>
Date: Wed, 16 Jul 2025 10:03:40 +0200
From: Rostyslav Khudolii <ros@...c.com>
To: Pali Rohár <pali@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>, Yazen Ghannam <yazen.ghannam@....com>, 
	Borislav Petkov <bp@...en8.de>, Filip Štědronský <p@...narg.cz>, 
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: PCI IO ECS access is no longer possible for AMD family 17h

> Hello, thank you for information.
>
> Just I would like to know, where did you find information that the
> EnableCF8ExtCfg register was moved to D18F4x044? It is documented in
> some AMD specification?
>
> I did not find anything regarding this change.

I mentioned the exact specification in my first message. It's under
NDA, unfortunately.