On Thu, Jun 14, 2018 at 05:38:16PM -1000, Richard Henderson wrote: > On 06/14/2018 03:45 PM, David Gibson wrote: > >>> To wit, the instructions are recognized and transactions always fail. > >>> Which is > >>> not a bad way to test the required fallback paths that rarely fail on > >>> hardware. > >>> ;-) > >> > >> If TM instructions don't cause an exception, I guess its reasonable to say > >> they're supported :) > > > > That argument has come up before, and I disagree. I don't think it's > > reasonable to advertise TM support as available if the instructions > > always fail. > > Is it possible to turn it on from the command-line?
Not at present.. attempting to is what gives the error message
discussed above.
> Like one can with -cpu foo,+opt on x86 or -cpu foo,opt=on on s390?
>
>
> r~
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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