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From: Blue Swirl <blauwirbel@gmail.com>
Date: Wed, 10 Feb 2010 20:34:45 +0200
Message-ID: <f43fc5581002101034x4b554d1cl1c848292ea8a5a0f@mail.gmail.com>
Subject: Re: [Qemu-devel] [PATCH 0/15][RFC] New PCI interfaces
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To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Michael Tsirkin <mstirkin@redhat.com>, qemu-devel@nongnu.org, Alex Graf <agraf@suse.de>

On Wed, Feb 10, 2010 at 12:01 AM, Anthony Liguori <aliguori@us.ibm.com> wro=
te:
> This is a work in progress that I wanted to share giving some of the disc=
ussions
> around rwhandlers. =C2=A0The idea is to make PCI devices have a common se=
t of
> functions to interact with the CPU that is driven entirely through the PC=
I bus.
>
> I've tested the network card conversions, but have not yet tested the oth=
er
> bits.

By itself, the patches look OK. But given that the conclusion of the
generic DMA discussion was to aim for mapping approach (in order to
prepare for zero copy DMA), I wonder how the patches fit to the larger
picture. Perhaps instead of pci specific functions, a more generic
memory object with read and write methods could be introduced, which
would be more useful in the longer term?