linux-kernel - Re: [RFC PATCH 01/24] vhost-vdpa: fix backend feature ioctls

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Message-ID: <20200924073810.GB170403@mtl-vdi-166.wap.labs.mlnx>
Date:   Thu, 24 Sep 2020 10:38:10 +0300
From:   Eli Cohen <elic@...dia.com>
To:     Jason Wang <jasowang@...hat.com>
CC:     <mst@...hat.com>, <lulu@...hat.com>, <kvm@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <rob.miller@...adcom.com>, <lingshan.zhu@...el.com>,
        <eperezma@...hat.com>, <hanand@...inx.com>,
        <mhabets@...arflare.com>, <eli@...lanox.com>,
        <amorenoz@...hat.com>, <maxime.coquelin@...hat.com>,
        <stefanha@...hat.com>, <sgarzare@...hat.com>
Subject: Re: [RFC PATCH 01/24] vhost-vdpa: fix backend feature ioctls

On Thu, Sep 24, 2020 at 03:26:08PM +0800, Jason Wang wrote:
> 
> On 2020/9/24 下午3:16, Eli Cohen wrote:
> > On Thu, Sep 24, 2020 at 11:21:02AM +0800, Jason Wang wrote:
> > > Commit 653055b9acd4 ("vhost-vdpa: support get/set backend features")
> > > introduces two malfunction backend features ioctls:
> > > 
> > > 1) the ioctls was blindly added to vring ioctl instead of vdpa device
> > >     ioctl
> > > 2) vhost_set_backend_features() was called when dev mutex has already
> > >     been held which will lead a deadlock
> > > 
> > I assume this patch requires some patch in qemu as well. Do you have
> > such patch?
> > 
> 
> It's this series: [PATCH 0/3] Vhost-vDPA: batch IOTLB updating.
> 
> You were copied.
> 

Right, I miss those.
Thanks.