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From: Richard Henderson <richard.henderson@linaro.org>
To: David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org
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	[thread overview]
Message-ID: <9a1e00ab-5b80-0402-4335-cc340ba6b582@linaro.org> (raw)
In-Reply-To: <20180615014501.GI4129@umbus.fritz.box>

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?


r~

  reply	other threads:[~2018-06-15  3:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-12 16:27 [Qemu-devel] [PATCH 1/3] target/ppc: drop empty #if/#endif block Greg Kurz
2018-06-12 16:43 ` Philippe Mathieu-Daudé
2018-06-12 17:01 ` [Qemu-devel] [PATCH 2/3] spapr: fix leak in h_client_architecture_support() Greg Kurz
2018-06-12 20:13   ` Philippe Mathieu-Daudé
2018-06-12 23:38   ` David Gibson
2018-06-12 17:04 ` [Qemu-devel] [PATCH 3/3] target/ppc: filter out non-zero PCR values when using TCG Greg Kurz
2018-06-13  0:45   ` David Gibson
2018-06-13  8:19     ` Greg Kurz
2018-06-13 12:05       ` David Gibson
2018-06-13 14:26         ` Greg Kurz
2018-06-14  1:26           ` David Gibson
2018-06-14 19:52       ` Richard Henderson
2018-06-14 22:00         ` Greg Kurz
2018-06-15  1:45           ` David Gibson
2018-06-15  3:38             ` Richard Henderson [this message]
2018-06-15  3:40               ` David Gibson
2018-06-15  8:11             ` [Qemu-devel] [Qemu-ppc] " Greg Kurz
2018-06-12 23:38 ` [Qemu-devel] [PATCH 1/3] target/ppc: drop empty #if/#endif block David Gibson

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