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Date: Thu, 31 Mar 2011 16:49:46 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH RFC] vga: flag vga ram for notifiers
References: <20110331174328.GA25133@redhat.com>	<4D94C916.6080709@codemonkey.ws>	<20110331184940.GA25688@redhat.com>	<4D94CFA0.3030605@codemonkey.ws>	<AANLkTi=mfnmrcbezqKZWkns-RiRbBDNyiBpqGBtGO=Jp@mail.gmail.com>	<4D94D62E.2060206@codemonkey.ws>	<AANLkTinHb2PUaEcv7HstL1j1W3Vz8waejranF5ND3_Yi@mail.gmail.com>	<4D94E2A7.80700@codemonkey.ws>	<AANLkTi=x3R29QJzxc9gNbsUKHzY-zgx+P2foWCkdh0k=@mail.gmail.com>
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To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, Alex Williamson <alex.williamson@redhat.com>, qemu-devel@nongnu.org

On 03/31/2011 04:38 PM, Michael S. Tsirkin wrote:
>
>> That seems like a clearer API, yes. I think it makes it much more
>> obvious what it's trying to achieve.
>>
>> -- PMM
> Maybe register_dma_area - its' not 100% virtio specific.

It's never been clear to me whether that's true or not.  I've heard 
mixed things about whether devices DMA to other devices.  I've never 
been able to find something in a specification stating authoritatively 
one way or another.

Regards,

Anthony Liguori