mpam/snapshot/v5.17

[Jonathan Cameron]

On Wed, 15 Jun 2022 11:26:27 +0100
James Morse <james.morse at arm.com> wrote:

> Hi Itaru,
> 
> On 6/13/22 22:59, itaru.kitayama at fujitsu.com wrote:
> > Rob,
> > Indeed my colleague pointed that out to me as well. In the meantime, what's the best way
> > to test the MPAM feature (8.4 optional)?  
> 
> I do my testing with the Fixed Virtual Platform from arm[0].
> Its a bit of a pain to set up, but it configured correctly it presents MPAM MSC - although
> they don't do anything as its not a performance model.
> 
> There are a ton of options, but the main two to try and enable are something like:
> | cluster0.has_mpam=1
> | cluster0.l3cache-mpamf_base=0x30000000
> 
> Let me know off list if you want a hand setting it up.
> 
> 
> One day there will be hardware!

There is (and has been for several years... :) 

https://chowdera.com/2021/05/20210504023631776n.html

openEuler is carrying code for it.
https://gitee.com/openeuler/kernel/tree/openEuler-22.03-LTS/arch/arm64/kernel/mpam

> 
> 
> Thanks,
> 
> James
> 
> [0] https://developer.arm.com/Tools%20and%20Software/Fixed%20Virtual%20Platforms
> 
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