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Peter Anvin" , LKML , Bradley Morgan , Hans de Goede , Kai-Heng Feng , linux-acpi@vger.kernel.org Subject: Re: [PATCH v3 8/8] PCI/quirks: Avoid certain address on Genoa systems Message-ID: References: <81b4f4bf-b721-4b5b-8ddf-d040865f02b2@amd.com> <20261013224010.GA1589480@bhelgaas> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20261013224010.GA1589480@bhelgaas> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Tue, Oct 13, 2026 at 05:40:10PM -0500, Bjorn Helgaas wrote: > [+cc Hans, Kai-Heng, Andy, linux-acpi] If you want my opinion, I think that Mario's quirk series (with the revert of the 07eab0901ede) [2] is the way to go. I have not much time to dive into this, though. I also have no HW to reproduce either of the problems. > On Tue, Oct 13, 2026 at 01:59:23PM -0500, Mario Limonciello wrote: > > On 10/13/26 12:26, Ilpo Järvinen wrote: > > > On Tue, 13 Oct 2026, Mario Limonciello wrote: > > > > On 10/13/26 12:00, Mario Limonciello wrote: > > > > > On 10/13/26 08:09, Ilpo Järvinen wrote: [2] https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git/log/?h=superm1/genoa-mess > > Bjorn, thoughts on this? I'll send it out if that's the way we want > > to go (or Ilpo feel free to subsume into your series as it's only > > really exposed by your series at the moment) > > I would LOVE it if we can use those patches because it's way less > magic than 07eab0901ede is. > > But I'm frankly terrified to touch it because I'm skeptical that two > more quirks are enough. I just expect that whatever strategy BIOS > uses to build these maps is likely to be used on many models. I do > hate 07eab0901ede though, so I would love to see it gone. > > I do think the description [1] is overly specific because AFAIK > there's nothing that connects this to AMD EPYC 9354 or igb other than > the fact that it was seen there. It could happen to any PCI device on > any system with similar memory maps. > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git/commit/?h=superm1/genoa-mess&id=0a49c704477153d6597d34b3c6e3141007ff058c -- With Best Regards, Andy Shevchenko