linux-kernel - Re: [PATCH] soc: apple: rtkit: Fix buffer address field width

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Message-Id: <AE9570F8-6D5E-4314-AD21-21DD8B38D7F1@svenpeter.dev>
Date:   Sat, 25 Feb 2023 13:42:19 +0100
From:   Sven Peter <sven@...npeter.dev>
To:     Asahi Lina <lina@...hilina.net>
Cc:     Hector Martin <marcan@...can.st>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] soc: apple: rtkit: Fix buffer address field width



> On 24. Feb 2023, at 07:50, Asahi Lina <lina@...hilina.net> wrote:
> 
> The buffer address field is missing two bits. This matters for the GPU,
> which uses upper-half 64-bit addresses on the ASC and those get sign
> extended from the mailbox message field, so the right number of high
> bits need to be set.
> 
> Signed-off-by: Asahi Lina <lina@...hilina.net>
> --

Reviewed-by: Sven Peter <sven@...npeter.dev>