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Re: [Qemu-devel] [PATCH] monitor: Protect outbuf from concurrent access

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH] monitor: Protect outbuf from concurrent access
Date: Mon, 05 Sep 2011 09:48:04 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110830 Red Hat/3.1.12-2.el6_1 Thunderbird/3.1.12

On 09/02/11 17:31, Paolo Bonzini wrote:
On 09/02/2011 05:18 PM, Gerd Hoffmann wrote:

Can you just use a bottom half to defer this work to the I/O thread?
Bottom half scheduling has to be signal safe which means it will also be
thread safe.

Not that straight forward as I would have to pass arguments to the
bottom half.

Can you add a variant of qemu_bh_new that accepts a sizeof for the new
bottom half? Then the bottom half itself can be passed as the opaque and
used for the arguments.

That wouldn't help. I would have to create some kind of job queue which is then processed by the bottom half.


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