From: Paolo Bonzini <pbonzini@redhat.com>
To: "Sergey Fedorov" <serge.fdrv@gmail.com>,
"Jeff Epler" <jepler@gmail.com>,
qemu-devel@nongnu.org, "Alex Bennée" <alex.bennee@linaro.org>,
"Richard Henderson" <rth@twiddle.net>,
"Riku Voipio" <riku.voipio@iki.fi>,
"Blue Swirl" <blauwirbel@gmail.com>
Subject: Re: [Qemu-devel] qemu-arm-static, multiprocess, atomic
Date: Thu, 26 May 2016 13:21:02 +0200 [thread overview]
Message-ID: <91b3837f-f61c-a7d4-5266-964e8e27a839@redhat.com> (raw)
In-Reply-To: <5746D31C.3070500@gmail.com>
On 26/05/2016 12:42, Sergey Fedorov wrote:
> I'm afraid even our recent efforts in
> multi-threaded TCG won't change the situation. The problem is that it
> would require to translate somehow ARM's exclusive access monitor to x86
> model.
>
The cmpxchg-based variant would work. It doesn't implement LL/SC
exactly, but it works fine if the program is written against GCC atomic
builtins.
Thanks,
Paolo
next prev parent reply other threads:[~2016-05-26 11:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-25 12:34 [Qemu-devel] qemu-arm-static, multiprocess, atomic Jeff Epler
2016-05-26 10:42 ` Sergey Fedorov
2016-05-26 11:21 ` Paolo Bonzini [this message]
2016-05-26 12:53 ` Sergey Fedorov
2016-05-26 15:16 ` Paolo Bonzini
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