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Re: [Qemu-devel] [PATCH 3/3] target/ppc: filter out non-zero PCR values

From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 3/3] target/ppc: filter out non-zero PCR values when using TCG
Date: Thu, 14 Jun 2018 17:38:16 -1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

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?
Like one can with -cpu foo,+opt on x86 or -cpu foo,opt=on on s390?


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