Re: [Qemu-devel] [PATCH 12/17] target-openrisc: Enable m[tf]spr from user mode

[Bastian Koppelmann]

On 09/14/2015 07:11 PM, Richard Henderson wrote:
> On 09/13/2015 01:34 AM, Bastian Koppelmann wrote:
> > Looking at the article, user mode seems to be optional, so I'm not against it,
> > but it does look weird. How does ork1sim do it?
> It's haphazard.  There are checks for supervisor in the l_mtspr and l_mfspr
> insns, but not other uses of the sprs, such as l_rfe.
How about we make the optional user mode a feature bit? This way we are 
closer to ork1sim, but don't have the problem that testing is hindered.

Cheers,
Bastian