From: "Michael S. Tsirkin" <mst@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: Alex Williamson <alex.williamson@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH RFC] vga: flag vga ram for notifiers
Date: Fri, 1 Apr 2011 14:21:16 +0300 [thread overview]
Message-ID: <20110401112115.GA4666@redhat.com> (raw)
In-Reply-To: <AANLkTino9OzaTB1-M0zUw83cw8RvefUN-kHB7jzBpps3@mail.gmail.com>
On Fri, Apr 01, 2011 at 08:12:48AM +0100, Peter Maydell wrote:
> On 31 March 2011 22:38, Michael S. Tsirkin <mst@redhat.com> wrote:
> > On Thu, Mar 31, 2011 at 10:32:11PM +0100, Peter Maydell wrote:
> >> On 31 March 2011 21:23, Anthony Liguori <anthony@codemonkey.ws> wrote:
> >> > Maybe the right approach here is to just use a virtio specific API and
> >> > register RAM as register_virtio_dma_area().
> >>
> >> That seems like a clearer API, yes. I think it makes it much more
> >> obvious what it's trying to achieve.
>
> > Maybe register_dma_area - its' not 100% virtio specific.
>
> Presumably it is specific to virtualisation-aware devices
> though? Guest DMA has to just work to all the locations you
> can DMA to/from on hardware, right?
>
> -- PMM
I guess so, yes. But it might not be possible e.g. for a PCI device
to DMA into an ISA device.
--
MST
next prev parent reply other threads:[~2011-04-01 11:21 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-31 17:43 [Qemu-devel] [PATCH RFC] vga: flag vga ram for notifiers Michael S. Tsirkin
2011-03-31 18:33 ` Anthony Liguori
2011-03-31 18:49 ` Michael S. Tsirkin
2011-03-31 19:01 ` Anthony Liguori
2011-03-31 19:07 ` Michael S. Tsirkin
2011-03-31 19:26 ` Anthony Liguori
2011-03-31 20:03 ` Michael S. Tsirkin
2011-03-31 20:21 ` Anthony Liguori
2011-03-31 19:17 ` Alex Williamson
2011-03-31 19:18 ` Peter Maydell
2011-03-31 19:29 ` Anthony Liguori
2011-03-31 20:12 ` Peter Maydell
2011-03-31 20:23 ` Anthony Liguori
2011-03-31 21:32 ` Peter Maydell
2011-03-31 21:38 ` Michael S. Tsirkin
2011-03-31 21:49 ` Anthony Liguori
2011-03-31 23:42 ` Michael S. Tsirkin
2011-04-01 0:44 ` Anthony Liguori
2011-04-01 1:07 ` Michael S. Tsirkin
2011-04-01 7:12 ` Peter Maydell
2011-04-01 11:21 ` Michael S. Tsirkin [this message]
2011-03-31 21:26 ` Michael S. Tsirkin
2011-03-31 21:32 ` Anthony Liguori
2011-03-31 21:37 ` Michael S. Tsirkin
2011-03-31 21:48 ` Anthony Liguori
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