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From: "Pavel Dovgalyuk" <dovgaluk@ispras.ru>
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Date: Tue, 31 Oct 2017 14:27:04 +0300
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Subject: Re: [Qemu-devel] What is the best commit for record-replay?
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To: =?UTF-8?Q?'Alex_Benn=C3=A9e'?= <alex.bennee@linaro.org>, 'Aleksandr Bezzubikov' <zuban32s@gmail.com>
Cc: 'QEMU Developers' <qemu-devel@nongnu.org>, 'Pranith Kumar' <bobby.prani+qemu@gmail.com>, pavel.dovgaluk@ispras.ru, 'Aleksandr Bezzubikov' <abezzubikov@ispras.ru>, 'Paolo Bonzini' <pbonzini@redhat.com>, 'Igor R' <boost.lists@gmail.com>

> From: Alex Benn=C3=A9e [mailto:alex.bennee@linaro.org]
> Aleksandr Bezzubikov <zuban32s@gmail.com> writes:
>=20
> > 2017-09-19 12:30 GMT+03:00 Alex Benn=C3=A9e =
<alex.bennee@linaro.org>:
> >>
> >>> As I know, RR is still broken in the current version.
> >>> It was caused by the MTTCG implementation.
> >>> Alex Bennee tried to fix RR back. Alex, have you found any =
solution?
> >>>
> >>> We also trying to find a way to fix RR. It seems, that we will =
reinvent BQL for RR.
> >>
> >> I think the method outlined in my RFC is the way to go, essentially =
the
> >> RR mutex taking over for the what the BQL did. The RFC patch hadn't
> >> hoisted the mutex for the additional devices so I'm just re-basing =
now
> >> and I'll see if I can make the changes for Igor's test case.
> >>
> >> --
> >> Alex Benn=C3=A9e
>=20
> Could you try:
>=20
>   https://github.com/stsquad/qemu/tree/bql-and-replay-locks-v2
>=20
> And report back?

Please check the new series of the patches.
It includes patches from Alex and some fixes that made them working.

Pavel Dovgalyuk