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Date:	Mon, 02 Apr 2007 15:30:40 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>, Andi Kleen <ak@...e.de>,
	virtualization@...ts.linux-foundation.org,
	Virtualization Mailing List <virtualization@...ts.osdl.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	mathiasen@...il.com
Subject: Re: A set of "standard" virtual devices?

Jeff Garzik wrote:
> 
> Sure, but let's look beyond device detection.  For instance, it does not 
> necessarily follow that emulating PCI DMA is the best way to go for 
> communication with a virtual device, once detected.
> 

This is true, of course.  However, there are going to be a set of 
virtual devices which don't necessarily have to have super-high 
performance.  In the case of a hwrng device, even doing DMA is probably 
overkill.

> Outside of pci_device_id driver matching, is there much value here?

If we can get a set of device drivers that if not all then at least a 
number of hypervisors and/or emulators can agree upon, I think that's 
much won.

	-hpa
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