linux-kernel - Re: various vmbus review comments

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]

Message-ID: <20110510131615.GA7113@suse.de>
Date:	Tue, 10 May 2011 06:16:15 -0700
From:	Greg KH <gregkh@...e.de>
To:	KY Srinivasan <kys@...rosoft.com>
Cc:	Christoph Hellwig <hch@...radead.org>, Greg KH <greg@...ah.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"virtualization@...ts.osdl.org" <virtualization@...ts.osdl.org>
Subject: Re: various vmbus review comments

On Tue, May 10, 2011 at 01:00:26PM +0000, KY Srinivasan wrote:
> 
> 
> > -----Original Message-----
> > From: Christoph Hellwig [mailto:hch@...radead.org]
> > Sent: Tuesday, May 10, 2011 1:24 AM
> > To: KY Srinivasan
> > Cc: Christoph Hellwig; Greg KH; gregkh@...e.de; linux-kernel@...r.kernel.org;
> > devel@...uxdriverproject.org; virtualization@...ts.osdl.org
> > Subject: Re: various vmbus review comments
> > 
> > On Mon, May 09, 2011 at 02:56:52PM +0000, KY Srinivasan wrote:
> > > I will address this. Greg had a concern about module reference counting
> > > and looking at the current code, it did not appear to be an issue. The
> > > change you are suggesting will not affect the vmbus core which is what I want
> > > to focus on. I will however, fix this issue in the current round of patches I will
> > > send out this week.
> > 
> > It very clearly affects the interface between the core and the
> > functional drivers.  Trying to submit the core without making sure the
> > interface is exports works properly is not an overly good idea.
> 
> I must be missing something here. As I look at the block driver (and
> this is indicative of other drivers as well); the exit routine -
> blkvsc_drv_exit, first iterates through all the devices it manages
> and invokes device_unregister() on each of the devices and then 
> invokes vmbus_child_driver_unregister() which is just a wrapper on
> driver_unregister(). So, if I understand you correctly, you want the devices to
> persist even if there is no driver bound to them.

That's how the Linux driver model should be used, so yes, that is the
correct thing to do.

thanks,

greg k-h
--
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/