From: Brian Wheeler <bdwheele@indiana.edu>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] PATCH/RFC: PCI memory mapping
Date: Thu, 02 Apr 2009 13:42:30 -0400 [thread overview]
Message-ID: <1238694150.18745.122.camel@nibbler.dlib.indiana.edu> (raw)
In-Reply-To: <f43fc5580904021032m390a4dd6h16435e393b09f2b6@mail.gmail.com>
On Thu, 2009-04-02 at 20:32 +0300, Blue Swirl wrote:
> On 4/2/09, Brian Wheeler <bdwheele@indiana.edu> wrote:
> > [first off, if there's an easier way to do this, let me know!]
> >
> > This patch adds an address mapping function to the PCI bus so the host
> > chipset can remap PCI generated addresses to the appropriate physical
> > addresses.
>
> This discussion has come up many, many times, but finally the design
> was settled to the current dma API. It supports resolving guest
> addresses to host pointers, so that part should be extended instead
> of adding new functionality. We want (one day) zero copy DMA even with
> IOMMU.
>
>
Is there documentation somewhere?
next prev parent reply other threads:[~2009-04-02 17:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 14:57 [Qemu-devel] PATCH/RFC: PCI memory mapping Brian Wheeler
2009-04-02 15:18 ` [Qemu-devel] " Tristan Gingold
2009-04-02 17:23 ` Brian Wheeler
2009-04-02 17:32 ` [Qemu-devel] " Blue Swirl
2009-04-02 17:42 ` Brian Wheeler [this message]
2009-04-02 22:40 ` Paul Brook
2009-04-03 15:05 ` Brian Wheeler
2009-04-03 15:28 ` Paul Brook
2009-04-03 16:01 ` Brian Wheeler
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