[Public]
> > -----Original Message-----
> > From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> > Sent: Thursday, June 23, 2022 08:34
> > To: Limonciello, Mario <Mario.Limonciello@xxxxxxx>
> > Cc: Hans de Goede <hdegoede@xxxxxxxxxx>; Rafael J . Wysocki
> > <rjw@xxxxxxxxxxxxx>; linux-acpi <linux-acpi@xxxxxxxxxxxxxxx>;
> > regressions@xxxxxxxxxxxxxxx; Thorsten Leemhuis (regressions address)
> > <regressions@xxxxxxxxxxxxx>
> > Subject: Re: "Revert "ACPI: Pass the same capabilities to the _OSC regardless
> > of the query flag"" is causing regressions
> >
> > On Thu, Jun 23, 2022 at 07:24:34AM -0500, Mario Limonciello wrote:
> > > On 6/23/22 05:06, Hans de Goede wrote:
> > > > Hi Rafael, Mario,
> > > >
> > > > Commit 2ca8e6285250 ("Revert "ACPI: Pass the same capabilities to the
> > > > _OSC regardless of the query flag"") is causing the issues fixed
> > > > by the reverted commit to show up again, see:
> > > >
> > > >
> > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugz
> > illa.kernel.org%2Fshow_bug.cgi%3Fid%3D213023&data=05%7C01%7Cm
> >
> ario.limonciello%40amd.com%7C0040716e869d4021ce3208da551d082d%7C3d
> >
> d8961fe4884e608e11a82d994e183d%7C0%7C0%7C637915880426388833%7CU
> > nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI
> > 6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=KxmNvCfdm
> > qvk5gXteXUDXHVTK45yEt%2BUYO4vaBbLXis%3D&reserved=0
> > > >
> > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugz
> > illa.redhat.com%2Fshow_bug.cgi%3Fid%3D1963717&data=05%7C01%7C
> >
> mario.limonciello%40amd.com%7C0040716e869d4021ce3208da551d082d%7C
> >
> 3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637915880426388833%7
> > CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJ
> > BTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=pZRqAG3
> > %2Bg0QevLOGZ8m9PNxcmkmh58soT2dSLg%2B6qWc%3D&reserved=0
> > > >
> > > > both of which have comments from the reporters that
> > > > the error message is back again; and presumably also
> > > > that /sys/devices/system/cpu/cpu0/acpi_cppc is missing
> > > > again.
> > > >
> > > > Can you please take a look and see if we can come up with
> > > > something which fixes both the re-surfaced issue, as well
> > > > as the issue which the revert tries to address ?
> > > >
> > >
> > >
> > > Is it possible that c42fa24b44751c62c86e98430ef915c0609a2ab8 didn't
> > backport
> > > to the stable trees it popped back up again?
> > >
> >
> > It is only in 5.18, no stable releases that I can see.
>
> I think that should probably come back to stable along with everything this
> revert went back to, but before doing that perhaps we can get someone
> affected to confirm cherry-picking it helps.
Users have reported to the Kernel Bugzilla that just picking that patch didn't
help. At it's core it "seems" to me the firmware masks CPPC support in the _OSC
and previously that was actually ignored. Since the final SSDT with the PR0._CPC
is loaded dynamically based on whether CPPC was supported this runtime error
happens.
As multiple people have been duplicated into that bug let's work through some
ideas on it there. To start out I've left a suggestion in there for users to have a
try with.
