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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [RFC]VM live snapshot proposal |
Date: | Mon, 03 Mar 2014 14:18:28 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
Il 03/03/2014 13:32, Stefan Hajnoczi ha scritto:
If there is not enough memory to fork, then a synchronous approach to catching guest memory writes is needed. I'm not sure if a good mechanism for that exists but the simplest would be mprotect(2) and a signal handler (which will make the guest run very slowly).
I think we'll be adding such a mechanism, but for guest memory reads, for postcopy migration. Perhaps it could be reused for live snapshotting?
Paolo
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