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

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Date:   Thu, 24 Sep 2020 15:26:08 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Eli Cohen <elic@...dia.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 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.

Thanks