linux-kernel - Re: [PATCH] drm/tiny: pixpaper: add explicit dependency on MMU

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Message-ID: <9be201bd-977e-48df-bb57-7ef1f532b26f@suse.de>
Date: Thu, 30 Oct 2025 09:10:57 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: lcwang <zaq14760@...il.com>
Cc: maarten.lankhorst@...ux.intel.com, mripard@...nel.org, airlied@...il.com,
 simona@...ll.ch, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/tiny: pixpaper: add explicit dependency on MMU

Hi

Am 30.10.25 um 03:43 schrieb lcwang:
> Hi Thomas,
>
> Thanks for the clarification.
>
> Just to confirm my understanding — are you suggesting that this issue
> should ideally be fixed in the RISC-V Kconfig (specifically the PORTABLE
> logic that ensures MMU is selected), rather than adding a local
> "depends on MMU" here in DRM_PIXPAPER?
>
> If that’s the case and the root cause will be addressed in the RISC-V
> side, I’m happy to drop this patch to avoid redundant dependencies.

After reconsidering, we can merge your patch. Here's probably no easier 
solution to the problem.

Best regards
Thomas

>
> Best regards,
> LiangCheng

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
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