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

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Date:	Sun, 06 Jun 2010 16:44:07 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Chris Wright <chrisw@...s-sol.org>
CC:	Joerg Roedel <joro@...tes.org>,
	"Michael S. Tsirkin" <mst@...hat.com>, Tom Lyon <pugs@...co.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	hjk@...utronix.de, gregkh@...e.de, aafabbri@...co.com,
	scofeldm@...co.com
Subject: Re: [PATCH] VFIO driver: Non-privileged user level PCI drivers

On 06/02/2010 07:53 PM, Chris Wright wrote:
> * Avi Kivity (avi@...hat.com) wrote:
>    
>> The interface would only work for clients which support it: kvm,
>> vhost, and iommu/devices with restartable dma.
>>      
> BTW, there is no such thing as restartable dma.  There is a provision in
> new specs (read: no real hardware) that allows a device to request pages
> before using them.  So it's akin to demand paging, but the demand is an
> explicit request rather than a page fault.
>    

Thanks for the correction.

-- 
error compiling committee.c: too many arguments to function

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