linux-kernel - Re: [PATCH RFC] virtio-net: remove useless disable on freeze

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: <20120503110845.GA25569@redhat.com>
Date:	Thu, 3 May 2012 14:08:45 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Amit Shah <amit.shah@...hat.com>
Cc:	netdev@...r.kernel.org, Rusty Russell <rusty@...tcorp.com.au>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH RFC] virtio-net: remove useless disable on freeze

On Thu, May 03, 2012 at 04:29:59PM +0530, Amit Shah wrote:
> On (Wed) 04 Apr 2012 [12:19:55], Michael S. Tsirkin wrote:
> > disable_cb is just an optimization: it
> > can not guarantee that there are no callbacks.
> 
> Even then, what's the harm in keeping it?  If indeed there's an
> attempt to raise an interrupt after the host has been notified, it
> will be suppressed.

It won't. It's not a guarantee, e.g. with event index on
it does nothing at all.

> Also, disable_cb seems to be used elsewhere in the virtio_net.c file,
> to suit similar purposes.
> 
> 		Amit

Where?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/