On Mon, 2018-02-12 at 09:45 +0100, Hans de Goede wrote:
> Hi,
>
> On 12-02-18 07:08, Dhinakaran Pandiyan wrote:
> > PSR currently when enabled results in semi-permanent freezes or noticeable
> > cursor lags.
> >
> > https://patchwork.freedesktop.org/series/37598/ will fix long freezes due
> > to frame counter resets.
> >
> > This series has three more fixes -
> > Patch 1 eliminates PSR exit for flips and makes us rely on the HW to do it.
> > Patch 2 fixes cusor move lag by relying on HW to exit PSR.
> > Patch 3 fixes temporary freeze seen with fbdev.
> >
> > With both the series applied, PSR on my SKL ThinkPad feels pretty good.
>
> Thank you for your great work on this.
>
> Are there any more PSR fixes in the pipeline?
Yeah, there are a few more fixes that I hope will appear on the list in
the next two weeks or so.
> If not I think I should do
> a custom Fedora kernel build based on 4.15 + recent fixes and ask all my
> testers to retest with that.
>
> I do have some questions before I do this:
>
> 1) I believe that only testers with skylake (normal or LP) or newer should
> re-test, correct?
These fixes do apply for HSW/BDW, so essentially all the big cores
supporting PSR. But, HSW/BDW need fixes for AUX channel-PSR interaction
also. I haven't looked into CHV/VLV.
>
> 2) I know there are 2 series (including this one), can someone provide a link
> to the latest patchwork version of those 2 series, or even better a git
> branch with 4.15 + those patches? Any patches I'm missing if I pick up these
> 2 series?
https://patchwork.freedesktop.org/series/37598/
https://patchwork.freedesktop.org/series/38067/
> 3) I'm thinking 4.15 atm, but I could also do a 4.16-rc1 test kernel instead
> if that would be better, would that be better ?
I can't think of any diff that would affect PSR, but the latest is
better I suppose.
>
> Regards,
>
> Hans
>
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