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Re: [Qemu-devel] qemu-arm-static, multiprocess, atomic

From: Paolo Bonzini
Subject: Re: [Qemu-devel] qemu-arm-static, multiprocess, atomic
Date: Thu, 26 May 2016 13:21:02 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.0

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



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