Hi Stefan, Stefan Hajnoczi writes:
> Hi Pranith, > I was curious about the status of your MTTCG GSoC work: > > I saw your fence series which implements the noop memory barrier/fence > instructions on various architectures, but I wasn't sure if that also > covers the case where a strong target is emulated on a weak host. > No, this work is still pending. The current implementation only supports weak on strong (the simplest case) by emitting barriers explicitly. > Did you make TCG automatically emit barriers so stronger targets (x86) > run correctly on weaker targets (ARM)? We did consider doing this by emitting barriers implicitly for each memory instruction of a strong target but decided that it would be too costly. There is, AFAIK, no trivial solution to avoiding this overhead as of now. I will start working on this next step soon, once I finish the tcg test setup. Thanks, -- Pranith
