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Date: Fri, 28 Nov 2014 07:13:06 +0008
From: Jason Wang <jasowang@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH RFC for-2.2] virtio-blk: force 1st s/g to
 match header
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To: Fam Zheng <famz@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, peter.maydell@linaro.org, "Michael S. Tsirkin" <mst@redhat.com>, Stefan Hajnoczi <stefanha@gmail.com>, qemu-devel <qemu-devel@nongnu.org>, Stefan Hajnoczi <stefanha@redhat.com>



On Fri, Nov 28, 2014 at 9:16 AM, Fam Zheng <famz@redhat.com> wrote:
> On Thu, 11/27 23:13, Michael S. Tsirkin wrote:
>>  On Thu, Nov 27, 2014 at 07:21:35PM +0000, Stefan Hajnoczi wrote:
>>  > On Thu, Nov 27, 2014 at 4:33 PM, Michael S. Tsirkin 
>> <mst@redhat.com> wrote:
>>  > > We leak cpu mappings when 1st s/g is not exactly the
>>  > > header. As we don't set ANY_LAYOUT, we can at this point
>>  > > simply assert the correct length.
>>  > >
>>  > > This will have to be fixed once ANY_LAYOUT is set.
>>  > >
>>  > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
>>  > > ---
>>  > >
>>  > > Untested: posting for early feedback.
>>  > 
>>  > Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
>>  
>>  Stefan, you are going to merge this for 2.2?
>>  Peter, if Stefan is merging this one, we can
>>  take Jason's patch for -net and that should be
>>  enough for 2.2.
> 
> My test bot saw a failure of "make check":
> 
> qemu-system-x86_64: virtio-blk request outhdr too long
> Broken pipe
> GTester: last random seed: R02S44c5a09d74c0603f0091ed20d1395121
> qemu-system-x86_64: virtio-blk request outhdr too long
> Broken pipe
> GTester: last random seed: R02Sfdf270c8e1ed75c1f2047e3f0fb89b88
> qemu-system-x86_64: virtio-blk request outhdr too long
> Broken pipe
> GTester: last random seed: R02Sd292c540929b963ed9d7d155f3db5452
> qemu-system-x86_64: virtio-blk request outhdr too long
> Broken pipe
> GTester: last random seed: R02Sfc775a34a844c39f376aa478eda7573f
> [vmxnet3][WR][vmxnet3_peer_has_vnet_hdr]: Peer has no virtio 
> extension. Task offloads will be emulated.
> make: *** [check-qtest-x86_64] Error 1
> 
> Fam

This probably because of the test itself.

But anyway all kinds of guests (especially Windows drivers) need 
to be tested.