ACK: [SRU][O][PATCH 0/4] drm/xe: Fix LNL gpu getting wedged after idling

[Stefan Bader]

On 30.10.24 15:51, Timo Aaltonen wrote:
> BugLink: https://bugs.launchpad.net/bugs/2085944
> 
> [Impact]
> 
> Leaving a system with Lunar Lake idle for an hour or so will end up with the display driver getting
> wedged requiring a reboot.
> 
> This is fixed upstream by this commit:
> 
> commit 22ef43c78647dd37b0dafe2182b8650b99dbbe59
> Author: Badal Nilawar <badal.nilawar at intel.com>
> Date: Thu Oct 17 16:44:10 2024 +0530
> 
>      drm/xe/guc/ct: Flush g2h worker in case of g2h response timeout
> 
> but in order to apply cleanly, we also need a set of three patches which are already in v6.11.5
> 
> [Test case]
> 
> Boot a patched kernel on LNL, leave it idle for a couple of hours/overnight and check that it's
> still working normally.
> 
> Badal Nilawar (1):
>    drm/xe/guc/ct: Flush g2h worker in case of g2h response timeout
> 
> Matthew Auld (3):
>    drm/xe/guc_submit: fix xa_store() error checking
>    drm/xe/ct: prevent UAF in send_recv()
>    drm/xe/ct: fix xa_store() error checking
> 
>   drivers/gpu/drm/xe/xe_guc_ct.c     | 62 +++++++++++++++++++++---------
>   drivers/gpu/drm/xe/xe_guc_submit.c |  9 ++---
>   2 files changed, 47 insertions(+), 24 deletions(-)
> 

Acked-by: Stefan Bader <stefan.bader at canonical.com>
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