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Message-ID: <20211224115537.GA9505@elementary>
Date:   Fri, 24 Dec 2021 12:55:37 +0100
From:   José Expósito <jose.exposito89@...il.com>
To:     Melissa Wen <mwen@...lia.com>
Cc:     rodrigosiqueiramelo@...il.com, hamohammed.sa@...il.com,
        airlied@...ux.ie, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, melissa.srw@...il.com
Subject: Re: [PATCH 0/3] drm/vkms: add support for multiple overlay planes

Hi Melissa,

Thank you very much for your review.

> On Thu, Dec 23, 2021 at 07:35:48PM -0100, Melissa Wen wrote:
> What test did you run? Indeed, not all kms tests are passing and fixes
> are welcome :)
> 
> Last time, I used these testcases for overlay: kms_plane_cursor,
> kms_atomic; and these tests were fine too: kms_cursor_crc, kms_writeback,
> kms_flip

For the different patches I have been working on I have tested mainly
with kms_atomic, kms_plane_cursor and kms_plane_alpha_blend.

For some reason, kms_cursor_crc suspends my PC. I still need to
investigate the cause.

I'll include a table with success/skip/fail tests before and after
the patch on v2 :)

> However, I think we need some limits for this number
> of planes. I would suggest to just expand the enable_overlay option to
> expose a predefined number of planes
> [...]
> I don't have a strong opinion on an exact/practical number. I took a
> quick look at other drivers and exposing 8 planes seems reasonable to
> me.

8 planes sound reasonable to me, I'll change it and send a revision
of [1] as well using the new constant.

Thanks again for taking the time to review this,
José Expósito

[1] https://lore.kernel.org/dri-devel/20211223081030.16629-1-jose.exposito89@gmail.com/T/

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