Re: [Qemu-devel] [PATCH v3 0/3] Support more than 8 MMU modes, speedup PPC by 10%

[Richard Henderson]

On 06/15/2015 09:00 AM, Artyom Tarasenko wrote:
> On Mon, Jun 15, 2015 at 5:50 PM, Richard Henderson <address@hidden> wrote:
> > On 06/11/2015 01:59 AM, Artyom Tarasenko wrote:
> > > This is a very promising approach. Would it also work on a large
> > > numbers of MMU modes?
> > > Particulary I wonder if it would work for SPARC, where 32-bit
> > > processors have up to 65536 MMU contexts.
> >
> >
> > No, it wouldn't.
>
> What would be a better approach there? Cache recently used contexts only?

On alpha and arm, we simply ignore Address Space Numbers, which is what I 
assume this is for Sparc.  I've tried several times to find an efficient way to 
do this for Alpha with no success.


r~