ACK: [SRU][S][PATCH v2 0/9] Add drm/i915 PREEMPT_RT support

[Andrei Gherzan]

On 2026/09/24 08:26AM, Benjamin Wheeler via kernel-team wrote:
> BugLink: https://bugs.launchpad.net/bugs/2168432
> 
> SRU justification:
> 
> [Impact]
> drm/i915 drivers need additional patches to be compatible with
> PREEMPT_RT. 
> 
> [Fix]
> cherry-pick the upstream drm/i915 PREEMPT_RT patches. 
> 
> [Test Plan]
> Compiled and boot tested.
> 
> [Where problems could occur]
> Problems or regressions could occur in the drm/i915 driver.
> 
> [Changes since v1]
> - Rewrote commit titles to UBUNTU: SAUCE:
> 
> Benjamin Wheeler (1):
>   UBUNTU: [debian] update master upstream-realtime
> 
> Mike Galbraith (2):
>   drm/i915: Use preempt_disable/enable_rt() where recommended
>   drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates
> 
> Sebastian Andrzej Siewior (6):
>   drm/i915: Disable tracing points on PREEMPT_RT
>   drm/i915/gt: Use spin_lock_irq() instead of local_irq_disable() +
>     spin_lock()
>   drm/i915: Drop the irqs_disabled() check
>   drm/i915/guc: Consider also RCU depth in busy loop.
>   Revert "drm/i915: Depend on !PREEMPT_RT."
>   drm/i915: Consider RCU read section as atomic.
> 
>  debian.master/upstream-realtime               |  2 +-
>  drivers/gpu/drm/i915/Kconfig                  |  1 -
>  drivers/gpu/drm/i915/display/intel_crtc.c     |  9 ++--
>  drivers/gpu/drm/i915/display/intel_cursor.c   |  9 ++--
>  .../drm/i915/display/intel_display_trace.h    |  4 ++
>  drivers/gpu/drm/i915/display/intel_vblank.c   | 50 ++++++++++++++-----
>  drivers/gpu/drm/i915/gt/intel_engine_cs.c     |  2 +-
>  .../drm/i915/gt/intel_execlists_submission.c  | 17 ++-----
>  drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  2 +-
>  drivers/gpu/drm/i915/i915_request.c           |  2 -
>  drivers/gpu/drm/i915/i915_trace.h             |  4 ++
>  drivers/gpu/drm/i915/intel_uncore_trace.h     |  4 ++
>  12 files changed, 70 insertions(+), 36 deletions(-)

Acked-by: Andrei Gherzan <andrei.gherzan at canonical.com>

-- 
Andrei Gherzan
gpg: rsa4096/D4D94F67AD0E9640
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