linux-kernel - Re: [PATCH 1/2] remoteproc: mediatek: Make sure IPI buffer fits in L2TCM

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Date: Wed, 27 Mar 2024 13:40:37 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: andersson@...nel.org, matthias.bgg@...il.com, tzungbi@...nel.org,
 tinghan.shen@...iatek.com, linux-remoteproc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org, wenst@...omium.org, kernel@...labora.com
Subject: Re: [PATCH 1/2] remoteproc: mediatek: Make sure IPI buffer fits in
 L2TCM

Il 21/03/24 16:25, Mathieu Poirier ha scritto:
> Good day,
> 
> On Thu, Mar 21, 2024 at 09:46:13AM +0100, AngeloGioacchino Del Regno wrote:
>> The IPI buffer location is read from the firmware that we load to the
>> System Companion Processor, and it's not granted that both the SRAM
>> (L2TCM) size that is defined in the devicetree node is large enough
>> for that, and while this is especially true for multi-core SCP, it's
>> still useful to check on single-core variants as well.
>>
>> Failing to perform this check may make this driver perform R/W
>> oeprations out of the L2TCM boundary, resulting (at best) in a
> 
> s/oeprations/operations
> 
> I will fix that when I apply the patch.
> 

Thanks for that.

Cheers,
Angelo