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Re: [Qemu-devel] [PATCH v2] qtest: virtio: zeroed last vring_desc after
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [PATCH v2] qtest: virtio: zeroed last vring_desc after allocate |
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Date: |
Tue, 17 Jan 2017 10:55:50 +0000 |
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User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Tue, Jan 17, 2017 at 10:59:24AM +0800, Longpeng(Mike) wrote:
> As qvring_indirect_desc_setup() wouldn't initialize last vring_desc,
> so it's filled with dirty data, this might cause virtio backend broken.
>
> For example, the last bit of this vring_desc's flags might be 1, so
> virtqueue_read_next_desc() would report "Desc next is ***".
>
> Signed-off-by: Longpeng(Mike) <address@hidden>
>
> ---
> Changes since v1:
> - use writel() for @len as it's 32 bits long. [Stefan]
>
> ---
> tests/libqos/virtio.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
Thanks, applied to my block-next tree:
https://github.com/stefanha/qemu/commits/block-next
Stefan
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