Re: [PATCH 5/5] drm/xe/vram: add early VRAM health check

[Matthew Brost <matthew.brost@intel.com>]

On Fri, Aug 28, 2026 at 09:13:07AM -0700, Linus Torvalds wrote:
> On Fri, 28 Aug 2026 at 08:14, Matthew Auld <matthew.auld@intel.com> wrote:
> >
> > With the fix from Linus, this goes away:
> 
> Side note: I told Greg KH that he should hold off on applying my fix
> to stable - because while it looked ObviouslyCorrect(tm) to me, I had
> only ever tested it on one single machine.
> 
> I'm taking it that the fix has now been tested much more widely and
> found no subtle issues? If so, I should let Greg know to go ahead and
> put it in the stable queue.
> 

I think it's OK to go ahead with backporting your patch to stable. I had
an open question about whether we wanted to implement the fix slightly
differently to avoid asserts triggering elsewhere in the code [1], but
Matt Auld has figured that part out while still carrying your fix
verbatim [2]. The asserts are also harmless and only appear in debug
builds. CI is passing as well [3], which should exercise this path
across several configurations.

We should discuss whether we want to backport [1] too.

Matt

[1] https://patchwork.freedesktop.org/patch/749151/?series=172984&rev=1
[2] https://patchwork.freedesktop.org/patch/749152/?series=172984&rev=1
[3] https://patchwork.freedesktop.org/series/172984/

>                     Linus