Re: [PATCH] firmware: arm_ffa: Unmap Rx/Tx buffers on shutdown

[Carol Soto <csoto@nvidia.com>]

On 8/19/26 2:13 PM, Carol Soto wrote:
>
> On 8/19/26 2:08 AM, Sudeep Holla wrote:
>> I had posted a single line patch here[1]. The original 
>> author/reported never
>> got back.
>>
>> -- Regards, Sudeep [1] 
>> https://lore.kernel.org/all/20260729-nostalgic-accurate-raccoon-ab7d7e@sudeepholla
>
> Hi Sudeep,
>
> Thanks for the pointer. I tried your patch from [1] and it fixes the 
> kexec issue on my setup.
>
> I also tried limiting the shutdown patch to just RXTX_UNMAP, but that 
> is not sufficient here.
> The next kernel can still fail notificaion setup with:
>
> ARM FF-A: Notification bitmap create error -13
>
> So I agree that using the normal FF-A cleanup patch from shutdown 
> looks like the right approach,
> since it tears down the notification bitmap state as well as unmapping 
> the Rx/Tx buffers.
>
> Are you planning to submit that change to resolve this issue?
>
> Thanks,
> Carol

Hi Suddep,

Just following up on the FF-A kexec issue. Do you plan to submit your 
shutdown cleanup patch, or would you prefer that I send a v2 based on 
that approach?

Thanks,

Carol