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Re: [Qemu-devel] [RFC 0/6] memory: make dirty_memory[] accesses atomic


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [RFC 0/6] memory: make dirty_memory[] accesses atomic
Date: Mon, 23 Mar 2015 12:09:55 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0


On 28/11/2014 13:44, Stefan Hajnoczi wrote:
> This is an example of what I mean.
> 
> I'm not going to work on making TCG thread-safe in this series, and
> there is no dangerous race condition in this code if we leave it as is.
> 
> But I'm not 100% sure of all cases, so I'll audit them again.

I looked at this again, and I agree that this series is not making
anything worse.

We have to start somewhere, so I'm thinking of queuing this series for
2.4.  Making dirty bitmaps thread-safe with respect to memory hotplug
can be done on top---especially since we already have a plan for that.

Paolo



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