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Message-ID: <CANiJ1U9renpjKDfSbFVTvt-G+P6iP3n4iN3_gzuVk_3DTWfJdg@mail.gmail.com>
Date:   Sun, 17 Sep 2023 09:05:27 +1000
From:   brett hassall <brett.hassall@...il.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        "Maciej W. Rozycki" <macro@...am.me.uk>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Ajay Agarwal <ajayagarwal@...gle.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Vidya Sagar <vidyas@...dia.com>,
        Michael Bottini <michael.a.bottini@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Linux Power Management <linux-pm@...r.kernel.org>
Subject: Re: upstream linux cannot achieve package C8 power saving

Hi

The Ubuntu devs have reverted their 3 patches and replaced them with 2
new patches.

Given this happened in the last week, I'll hold off submitting a patch
for now and see what Ubuntu does

Thanks
Brett


On Tue, 5 Sept 2023 at 06:25, brett hassall <brett.hassall@...il.com> wrote:
>
> Hi
>
> I contacted the Ubuntu developers to see if they were ok with using
> their patches.
>
> They advised the patches were outdated and further development was
> under discussion.
>
> The current patches work and would benefit Linux users until something
> better comes along.
>
> Would you like me to proceed with the formal patch still ?
>
> Thanks
> Brett
>
>
> On Wed, 30 Aug 2023 at 11:11, Bagas Sanjaya <bagasdotme@...il.com> wrote:
> >
> > Hi,
> >
> > I notice a bug report on Bugzilla [1]. Quoting from it:
> >
> > > v6.5 (and at least v5.15, v5.19 and v6.4 as well) will not go to a higher power saving level than package C3.
> > >
> > > With the inclusion of a patch that combines 3 Ubuntu commits related to VMD ASPM & LTR, package C8 is used.
> >
> > See Bugzilla for the full thread.
> >
> > FYI, the attached proposed fix is the same as Brett's another BZ report [2].
> > I include it for upstreaming.
> >
> > To Brett: Would you like to submit the proper, formal patch (see
> > Documentation/process/submitting-patches.rst for details)?
> >
> > Thanks.
> >
> > [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217841
> > [2]: https://bugzilla.kernel.org/show_bug.cgi?id=217828
> >
> > --
> > An old man doll... just what I always wanted! - Clara

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