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([2600:8800:1aa1:b100:c803:e868:a462:afb5]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1b3755e8838sm2123586c88.8.2026.11.07.19.08.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 07 Nov 2026 19:08:03 -0800 (PST) Message-ID: <13083638-9316-4d5b-8590-f104de3def3a@gmail.com> Date: Sat, 7 Nov 2026 20:08:02 -0700 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/5] drm/vkms: support more formats and fix RGB565 regression To: Matheus Alves de Almeida , Louis Chauvet , Haneen Mohammed , Simona Vetter , Melissa Wen Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20260928005301.367977-1-matheus.aalmeida@inf.ufrgs.br> Content-Language: en-US From: Sidharth Saha In-Reply-To: <20260928005301.367977-1-matheus.aalmeida@inf.ufrgs.br> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Matheus, I tested this series on top of drm-misc-next (7.3.0-rc4) with vkms in a VirtualBox VM, running IGT with and without the series applied. kms_writeback: writeback-pixel-formats, writeback-invalid-parameters, writeback-fb-id and writeback-check-output pass both with and without the series (writeback-check-output passed 4/4 runs on each), so I see no regression in the existing writeback path. kms_plane: pixel-format-linear-modifier fails both with and without the series, on the assertion in capture_crc() (crc->frame != vblank), before it reaches the new formats. This looks like the existing kms_plane CRC issue listed in the vkms TODO rather than anything in this series. I wasn't able to exercise the RGB332/BGR233 read paths or BGR565 writeback with these tests, so no Tested-by for the series as a whole. I did test the RGB565 rounding fix with a KUnit test, and I'll reply to patch 1/5 with the details. Thanks, Sidharth On 9/27/2026 5:52 PM, Matheus Alves de Almeida wrote: > Hi, > > This series adds support for RGB332, BGR233 and BGR565 writeback. This > is done with new helpers added to make conversion easier. It also fixes > a regression in the RGB565 write conversion.