Re: [Intel-gfx] [PATCH] drm/i915: Depend on !PREEMPT_RT.

[Sebastian Andrzej Siewior <bigeasy@linutronix.de>]

On 2022-02-14 19:59:08 [+0100], To intel-gfx@lists.freedesktop.org wrote:
> There are a few sections in the driver which are not compatible with
> PREEMPT_RT. They trigger warnings and can lead to deadlocks at runtime.
> 
> Disable the i915 driver on a PREEMPT_RT enabled kernel. This way
> PREEMPT_RT itself can be enabled without needing to address the i915
> issues first. The RT related patches are still in RT queue and will be
> handled later.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

A gentle ping ;)

> ---
>  drivers/gpu/drm/i915/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
> index a4c94dc2e2164..3aa719d5a0f0d 100644
> --- a/drivers/gpu/drm/i915/Kconfig
> +++ b/drivers/gpu/drm/i915/Kconfig
> @@ -3,6 +3,7 @@ config DRM_I915
>  	tristate "Intel 8xx/9xx/G3x/G4x/HD Graphics"
>  	depends on DRM
>  	depends on X86 && PCI
> +	depends on !PREEMPT_RT
>  	select INTEL_GTT
>  	select INTERVAL_TREE
>  	# we need shmfs for the swappable backing store, and in particular

Sebastian