From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:41792)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1XP6Y8-0003g3-G2
	for qemu-devel@nongnu.org; Wed, 03 Sep 2014 05:08:25 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1XP6Y3-00060e-Ak
	for qemu-devel@nongnu.org; Wed, 03 Sep 2014 05:08:20 -0400
Message-ID: <5406DA70.5010605@redhat.com>
Date: Wed, 03 Sep 2014 11:08:00 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
MIME-Version: 1.0
References: <1409734912-6932-1-git-send-email-mst@redhat.com>
In-Reply-To: <1409734912-6932-1-git-send-email-mst@redhat.com>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH] vhost-scsi: init backend features earlier
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: "Michael S. Tsirkin" <mst@redhat.com>, qemu-devel@nongnu.org
Cc: Jason Wang <jasowang@redhat.com>, qemu-stable@nongnu.org

Il 03/09/2014 11:02, Michael S. Tsirkin ha scritto:
> As vhost core uses backend_features during init,
> clear it earlier to avoid using uninitialized
> memory.
> This is harmless since vhost scsi ignores the result
> anyway, but it avoids valgrind errors.
> 
> Cc: qemu-stable@nongnu.org
> Cc: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  hw/scsi/vhost-scsi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/scsi/vhost-scsi.c b/hw/scsi/vhost-scsi.c
> index ddfe76a..7146e0e 100644
> --- a/hw/scsi/vhost-scsi.c
> +++ b/hw/scsi/vhost-scsi.c
> @@ -238,6 +238,7 @@ static void vhost_scsi_realize(DeviceState *dev, Error **errp)
>      s->dev.nvqs = VHOST_SCSI_VQ_NUM_FIXED + vs->conf.num_queues;
>      s->dev.vqs = g_new(struct vhost_virtqueue, s->dev.nvqs);
>      s->dev.vq_index = 0;
> +    s->dev.backend_features = 0;
>  
>      ret = vhost_dev_init(&s->dev, (void *)(uintptr_t)vhostfd,
>                           VHOST_BACKEND_TYPE_KERNEL, true);
> @@ -246,7 +247,6 @@ static void vhost_scsi_realize(DeviceState *dev, Error **errp)
>                     strerror(-ret));
>          return;
>      }
> -    s->dev.backend_features = 0;
>  
>      error_setg(&s->migration_blocker,
>              "vhost-scsi does not support migration");
> 

Acked-by: Paolo Bonzini <pbonzini@redhat.com>

want to keep it in your treee?

Paolo