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Re: [Qemu-devel] [PATCH v1 07/14] net: hub use lock to protect ports lis


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH v1 07/14] net: hub use lock to protect ports list
Date: Tue, 21 May 2013 15:57:52 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, May 07, 2013 at 01:46:55PM +0800, Liu Ping Fan wrote:
> From: Liu Ping Fan <address@hidden>
> 
> Hub ports will run on multi-threads, so use lock to protect them.
> 
> Signed-off-by: Liu Ping Fan <address@hidden>
> ---
>  net/hub.c |   25 ++++++++++++++++++++++++-
>  1 files changed, 24 insertions(+), 1 deletions(-)

Does this rely on net queue re-entrancy detection?  Otherwise we'll
deadlock when slirp re-enters the net layer, for example for ARP
requests.

I suggest moving this later in the patch series when the net queue is
protected already.

Stefan



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