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Date: Wed, 26 Oct 2011 13:47:30 -0300
From: Cleber Rosa <crosa@redhat.com>
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Subject: Re: [Qemu-devel] qemu/qemu-kvm floppy regression brought by
	212ec7baa28cc9d819234fed1541fc1423cfe3d8
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To: Kevin Wolf <kwolf@redhat.com>
Cc: Lucas Meneghel Rodrigues <lmr@redhat.com>, KVM mailing list <kvm@vger.kernel.org>, Marcelo Tosatti <mtosatti@redhat.com>, QEMU devel <qemu-devel@nongnu.org>, Avi Kivity <avi@redhat.com>, Cleber Rosa <crosa@redhat.com>, Richard Henderson <rth@twiddle.net>

On 10/26/2011 12:47 PM, Kevin Wolf wrote:
> Am 26.10.2011 16:41, schrieb Lucas Meneghel Rodrigues:
>> Hi folks:
>>
>> We've captured a regression with floppy disk on recent qemu (and
>> qemu-kvm, after a code merge). We bisected it to be caused by:
>>
>> commit 212ec7baa28cc9d819234fed1541fc1423cfe3d8
>> Author: Richard Henderson<rth@twiddle.net>
>> Date:   Mon Aug 15 15:08:45 2011 -0700
>>
>>       fdc: Convert to isa_register_portio_list
>>
>>       Signed-off-by: Richard Henderson<rth@twiddle.net>
>>       Signed-off-by: Avi Kivity<avi@redhat.com>
>>
>> Since this commit, the guest doesn't see a floppy disk attached to it
>> anymore, blocking kvm autotest ability to install windows guests
>> automatically. This is a big deal for kvm autotest (ruins our automated
>> regression jobs), so please take a look at it.
> Can you please try again with the latest block branch? I think there is
> a patch queued that will fix it.
>
> Kevin

Kevin,

The behaviour of the latest block branch is indeed different, but not 
much better.

In my quick manual test, booting via a FreeDOS floppy image:

* latest master: does not seem to read the floppy at all
* latest block: reads the floppy only to the point that 'FreeDOS' is 
printed in the console

All other qemu/qemu-kvm versions tested (for example 0.15.0), 
successfully read and boot the same image.

CR.