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From: Alex =?utf-8?Q?Benn=C3=A9e?= <alex.bennee@linaro.org>
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Date: Sun, 09 Apr 2017 15:27:29 +0100
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Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH v2 0/3] Enable MTTCG on PPC64
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To: luigi burdo <intermediadc@hotmail.com>
Cc: David Gibson <david@gibson.dropbear.id.au>, Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "programmingkidx@gmail.com" <programmingkidx@gmail.com>, "qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>, "bharata@linux.vnet.ibm.com" <bharata@linux.vnet.ibm.com>, "rth@twiddle.net" <rth@twiddle.net>


luigi burdo <intermediadc@hotmail.com> writes:

> Hi David and Nikuji,
>
> can i suggest to remove the message:
>
>
> Guest not yet converted to MTTCG - you may get unexpected results
> where the mttcg is enabled?

Have you declared the memory ordering for the guest?

>
> another thing im finding  is this message
> Guest expects a stronger memory ordering than the host provides
> This may cause strange/hard to debug errors

See ca759f9e387db87e1719911f019bc60c74be9ed8 for an example.

>
>
> I have 8 gb on my machine and this message come if i gave 512mb on the guest too.
>
> Is possible know where the mttcg is already enabled?
>
> i see on x86,i386,arm too if i set thread=multy the qemu start using the other host cores is on this guest system enabled?
>
> if yes i have the same messages of ppc64 too :
>
> Guest not yet converted to MTTCG - you may get unexpected results
>
> and
>
> Guest expects a stronger memory ordering than the host provides
> This may cause strange/hard to debug errors
>
>
> Ciao
>
> Luigi
>
>
> Applied to ppc-for-2.10.  Anyone object to that for 2/3, which isn't
> within ppc code?


--
Alex Bennée