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

[Guoqing Jiang]

Hi,

On 10/30/24 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

Looks the above three missed one original SOB

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

and relevant cherry-pick info.

42465603a310 drm/xe/guc_submit: fix xa_store() error checking
e863781abe4f drm/xe/ct: fix xa_store() error checking
db7f92af6261 drm/xe/ct: prevent UAF in send_recv()

Thanks,
Guoqing

>   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(-)
>