linux-kernel - Re: [PATCH V3] VFIO driver: Non-privileged user level PCI drivers

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Message-ID: <20100728215739.GA9671@redhat.com>
Date:	Thu, 29 Jul 2010 00:57:39 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	Tom Lyon <pugs@...co.com>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, randy.dunlap@...cle.com, arnd@...db.de,
	chrisw@...s-sol.org, joro@...tes.org, hjk@...utronix.de,
	avi@...hat.com, gregkh@...e.de, aafabbri@...co.com,
	scofeldm@...co.com
Subject: Re: [PATCH V3] VFIO driver: Non-privileged user level PCI drivers

On Wed, Jul 28, 2010 at 03:57:02PM -0600, Alex Williamson wrote:
> 
> Something like GET_MSIX_VECTORS seems like a user library routine to me.
> The PCI config space is well specified and if we try to do more than
> shortcut trivial operations (like getting the BAR length), we risk
> losing functionality.  And for my purposes, translating to and from a
> made up API to PCI for the guest seems like a pain.

Won't a userspace library do just as well for you?

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