Re: [Qemu-devel] [PATCH 02/31] target/s390x: Implement EXECUTE via new TranslationBlock

[Richard Henderson]

On 05/23/2017 10:28 AM, Aurelien Jarno wrote:
> > Something like this, as a delta patch.
>
> Unfortunately it doesn't work. So far I have no real idea what could be
> the root cause of the issue. I have just determined that up to the crash,
> only a very limited set of instructions are being executed. They are the
> 4 bytes long versions of MVC, CLC, XC, TR.

Yeah, it appears XC is the culprit, though I have not yet determined exactly 
what's going wrong.

That said, perhaps I'll delay this for later and just add some extra helpers 
for now.  It does seem slightly wasteful to create a TB for at least these 
common cases.


r~