Re: remoteproc DMA API abuse status

[Arnaud POULIQUEN]

Hello Mathieu,

On 6/24/21 9:35 PM, Mathieu Poirier wrote:
> Good day Christoph,
> 
> On Wed, Jun 23, 2021 at 03:43:07PM +0200, Christoph Hellwig wrote:
>> Hi remoteproc maintainers,
>>
>> did you make any progress to get remoteproc out of creating fake
>> devices that fake their dma ops status and the abuse of
>> dma_declare_coherent_memory in removeproc_virtio?  I remember we had
>> a discussion on this a long time ago, and there was an unfinished
>> patchset to change the memory pool handling.  What happened to all that?
> 
> I believe the conversation and patchset you are referring to are pre-dating my
> time in this subsystem.  To make sure I am looking at the right thing, can you
> (or anyone else) point me to that discussion and related patches?

2 references:

1)Previous discussion thread on the topic:

https://patchwork.kernel.org/project/linux-remoteproc/patch/AOKowLclCbOCKxyiJ71WeNyuAAj2q8EUtxrXbyky5E@xxxxxxxxxxxxxxxxxxxx/

2) My patchset related to the refactoring of remoteproc virtio which tries to
address the point by creating a remoteproc platform driver and declaring a
virtio subnode in the device tree remoteproc node.

https://lkml.org/lkml/2020/4/16/1817

No time yet on my side to come back on the patchset :(

Regards,
Arnaud

> 
> Thanks,
> Mathieu
>