Re: Emulating graviton G3

[Philippe Mathieu-Daudé]

Cc'ing qemu-arm@ list

On 3/3/23 08:20, Robert Henry wrote:
> I cannot figure out how to make QEMU TCG emulate aarch64 Graviton G3.  
> I'm working against master/head of the QEMU source.
>
> I come up with feature names by consulting 
> https://marcin.juszkiewicz.com.pl/download/tables/arm-socs.html 
> <https://marcin.juszkiewicz.com.pl/download/tables/arm-socs.html> which 
> is compendium of the /proc/cpuinfo info crowd sourced from linux running 
> on real systems
>
> I'm trying to either (a) add features to QEMU's '-cpu neoverse-n1,...' 
> or (b) take features away from '-cpu max,...'
>
> Unfortunately, many names of implemented or unimplemented features are 
> not known by the -cpu mechanism.  For example, from max I want to kill 
> "smeb16f32", or from neoverse-n1 I want to add in "svei8mm", but neither 
> name is known.  Indeed, the only names known by -cpu are those exposed 
> via the qmp mechanism are of the form  "sveNNN" for vector bit width NNN.
>
> Is there some trick I'm missing?