linux-kernel - Re: [PATCH V3 3/9] virtio: introduce config op to synchronize vring callbacks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 5 May 2022 16:15:50 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Cornelia Huck <cohuck@...hat.com>
Cc:     mst <mst@...hat.com>, linux-kernel <linux-kernel@...r.kernel.org>,
        virtualization <virtualization@...ts.linux-foundation.org>,
        Stefano Garzarella <sgarzare@...hat.com>,
        eperezma <eperezma@...hat.com>, Cindy Lu <lulu@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Marc Zyngier <maz@...nel.org>,
        Halil Pasic <pasic@...ux.ibm.com>
Subject: Re: [PATCH V3 3/9] virtio: introduce config op to synchronize vring
 callbacks


在 2022/4/29 15:25, Cornelia Huck 写道:
> On Fri, Apr 29 2022, Jason Wang <jasowang@...hat.com> wrote:
>
>> On Thu, Apr 28, 2022 at 5:13 PM Cornelia Huck <cohuck@...hat.com> wrote:
>>> On Mon, Apr 25 2022, Jason Wang <jasowang@...hat.com> wrote:
>>>
>>>> This patch introduces new virtio config op to vring
>>>> callbacks. Transport specific method is required to make sure the
>>>> write before this function is visible to the vring_interrupt() that is
>>> Which kind of writes? I.e., what is the scope?
>> Any writes before synchronize_cbs(). Is something like the following better?
>>
>> The function guarantees that all memory operations before it are
>> visible to the vring_interrupt() that is called after it.
> Maybe "all memory operations on the queue"?


That's fine. Will do.

Thanks


>