Re: [Qemu-devel] qemu/qemu-kvm floppy regression brought by 212ec7baa28cc9d819234fed1541fc1423cfe3d8

[Lucas Meneghel Rodrigues <lmr@redhat.com>]

On 10/26/2011 01:47 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, I did try with HEAD of your repo:

git://repo.or.cz/qemu/kevin.git

[lmr@freedom qemu-kwolf]$ git branch -r
   origin/HEAD -> origin/master
   origin/blkqueue
   origin/blkqueue-v1
   origin/block
   origin/coroutine
   origin/coroutine-block
   origin/coroutine-devel
   origin/devel
   origin/ehci
   origin/for-anthony
   origin/for-stable-0.14
   origin/inplace-conversion
   origin/master

With this repo, master branch, the problem persists. With the block 
branch, the problem persists.

Now, with the blkqueue branch the problem is resolved. Cleber had the 
same results booting a FreeDOS floppy. So the fix is indeed in blkqueue.

Oh, you might want to check the blkqueue branch, it does have quite a 
bunch of set but unused variables, which will cause compilation errors 
unless --disable-werror is passed to the configure script.

Please merge the fixes with qemu master as soon as you can, we are 
probably leave windows installs from the upstream daily jobs until the 
fixes get to master.

Thanks,

Lucas