linux-kernel - Re: RFC: Device isolation infrastructure

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Message-ID: <1323307969.12793.17.camel@pasglop>
Date:	Thu, 08 Dec 2011 12:32:49 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Chris Wright <chrisw@...hat.com>
Cc:	Alex Williamson <alex.williamson@...hat.com>,
	David Gibson <dwg@....ibm.com>, joerg.roedel@....com,
	dwmw2@...radead.org, iommu@...ts.linux-foundation.org,
	aik@....ibm.com, linux-kernel@...r.kernel.org, agraf@...e.de,
	scottwood@...escale.com, B08248@...escale.com
Subject: Re: RFC: Device isolation infrastructure

On Wed, 2011-12-07 at 16:16 -0800, Chris Wright wrote:
> Since users will want to drive devices, not groups, how would you
> enumerate and expose devices here if the user visible construct
> exposed is groups?

We do expose the individual devices in the group, which can then be used
for things like mmap'ing of BARs etc...

However, at least, the ownership transition is done on a whole group
basis

Cheers,
Ben.

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