Re: [RFC PATCH 00/11] Affirm SMMU coherent pagetable walker capability on RPMh SoCs
From: Konrad Dybcio
Date: Thu Sep 19 2024 - 06:08:03 EST
On 19.09.2024 9:00 AM, Luca Weiss wrote:
> On Thu Sep 19, 2024 at 12:57 AM CEST, Konrad Dybcio wrote:
>> I only read back the SMMU config on X1E & 7280, but I have it on good
>> authority that this concerns all RPMh SoCs. Sending as RFC just in case.
>>
>> Lacking coherency can hurt performance, but claiming coherency where it's
>> absent would lead to a kaboom.
>
> Hi Konrad!
>
> You want people with the affected SoCs to test this I imagine?
Yeah, would be nice to confirm
>
> Just boot it and see if it doesn't implode, or do you have any more
> elaborate test plan for this?
No, booting should be enough of a test
Konrad