From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v3 6/6] qemu_calculate_timeout: increase
 minimum timeout to 1h
Date: Fri, 10 Feb 2012 11:45:59 +0100
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To: Paul Brook <paul@codesourcery.com>
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On 02/10/2012 10:52 AM, Paul Brook wrote:
>> >  At least the floppy DMA engine is fine with it, it uses idle bottom
>> >  halves (which are a hack and could be replaced by timers, but that's not
>> >  relevant now).
> I thought idle bottom halves were one of the things that made this timout
> necessary.  How else are they going to get run?

The timeout is reduced to 10 ms when an idle bottom half is scheduled. 
See qemu_bh_update_timeout in async.c.

Paolo