linux-kernel - Re: [PATCH 00/11] Use copy

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

Message-ID: <20230311141346-mutt-send-email-mst@kernel.org>
Date:   Sat, 11 Mar 2023 14:15:11 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Mike Christie <michael.christie@...cle.com>, hch@...radead.org,
        stefanha@...hat.com, jasowang@...hat.com, sgarzare@...hat.com,
        virtualization@...ts.linux-foundation.org, brauner@...nel.org,
        ebiederm@...ssion.com, konrad.wilk@...cle.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/11] Use copy_process in vhost layer

On Sat, Mar 11, 2023 at 09:21:14AM -0800, Linus Torvalds wrote:
> On Fri, Mar 10, 2023 at 2:04 PM Mike Christie
> <michael.christie@...cle.com> wrote:
> >
> > The following patches were made over Linus's tree and apply over next. They
> > allow the vhost layer to use copy_process instead of using
> > workqueue_structs to create worker threads for VM's devices.
> 
> Ok, all these patches looked fine to me from a quick scan - nothing
> that I reacted to as objectionable, and several of them looked like
> nice cleanups.
> 
> The only one I went "Why do you do it that way" for was in 10/11
> (entirely internal to vhost, so I don't feel too strongly about this)
> how you made "struct vhost_worker" be a pointer in "struct vhost_dev".
> 
> It _looks_ to me like it could just have been an embedded structure
> rather than a separate allocation.
> 
> IOW, why do
> 
>    vhost_dev->worker
> 
> instead of doing
> 
>   vhost_dev.worker
> 
> and just having it all in the same allocation?
> 
> Not a big deal. Maybe you wanted the 'test if worker pointer is NULL'
> code to stay around, and basically use that pointer as a flag too. Or
> maybe there is some other reason you want to keep that separate..
> 
>                Linus

I agree with Linus here, slightly better embedded, but no huge deal.
Which tree is this going on?
If not mine here's my ack:

Acked-by: Michael S. Tsirkin <mst@...hat.com>

-- 
MST