[Intel-gfx] -stable regression in Intel graphics, introduced in Linux 5.10.9

[Greg KH]

On Sun, Feb 28, 2021 at 05:28:06PM +0100, Hans de Goede wrote:
> Hi,
> 
> On 2/28/21 4:14 PM, Greg KH wrote:
> > On Sun, Feb 28, 2021 at 03:29:07PM +0100, Diego Calleja wrote:
> >> Hi,
> >>
> >> There is a regression in Linux 5.10.9 that does not happen in 5.10.8. It is still there as
> >> of 5.11.1
> > 
> > Is this the same issue reported here:
> > 	https://lore.kernel.org/r/f1070486-891a-8ec0-0390-b9aeb03178ce@redhat.com
> > ?
> > 
> > If so, is this a problem in 5.11 as well?
> 
> I see in the original email:
> https://lore.kernel.org/stable/3423617.kz1aARBMGD@archlinux/
> 
> That Diego is using the iGPU part of a Haswell CPU, so yes this is almost
> certainly the same issue.
> 
> Diego as I already mentioned to another arch user, it would be good if the
> arch kernel-maintainers can pick-up these 3 commits from the drm-intel tree
> as downstream patches for now:
> 
> e627d5923cae ("drm/i915/gt: One more flush for Baytrail clear residuals")
> d30bbd62b1bf ("drm/i915/gt: Flush before changing register state")
> 1914911f4aa0 ("drm/i915/gt: Correct surface base address for renderclear")
> 
> We (Fedora) have added these as downstream patches for now and we have
> multiple reports that these resolve the problem.
> 
> Chris, can you please send the 2nd and 3th commit of the above list on
> their way to Linus ASAP, so that Greg can add them to the stable series?
> 
> ATM only the 1st commit is in Linus tree (unless the others have landed
> with different hashes?)

I have queued the first one up now, thanks.

greg k-h