From: "Blue Swirl" <blauwirbel@gmail.com>
To: qemu-devel@nongnu.org
Cc: kvm-devel@lists.sourceforge.net,
Marcelo Tosatti <marcelo@kvack.org>,
Anthony Liguori <aliguori@us.ibm.com>,
Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH 2/6] PCI DMA API
Date: Sun, 30 Mar 2008 10:06:19 +0300 [thread overview]
Message-ID: <f43fc5580803300006s24b5749ds8ffcfc9c0932258b@mail.gmail.com> (raw)
In-Reply-To: <1206827760-4566-2-git-send-email-aliguori@us.ibm.com>
On 3/30/08, Anthony Liguori <aliguori@us.ibm.com> wrote:
> This patch introduces a PCI DMA API and some generic code to support other DMA
> APIs. Two types are introduced: PhysIOVector and IOVector. A DMA API
> maps a PhysIOVector, which is composed of target_phys_addr_t, into an IOVector,
> which is composed of void *.
This looks like it wouldn't scale to handle the Sparc systems. There
we want to make more translation steps from DVMA addresses to physical
in DMA controller and IOMMU and only in the final stage to void *. To
handle this, probably there should be an opaque parameter and some way
to register the translation function. Otherwise the API looks OK.
next prev parent reply other threads:[~2008-03-30 7:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-29 21:55 [Qemu-devel] [PATCH 1/6] Use ram_addr_t for cpu_get_physical_page_desc Anthony Liguori
2008-03-29 21:55 ` [Qemu-devel] [PATCH 2/6] PCI DMA API Anthony Liguori
2008-03-30 7:06 ` Blue Swirl [this message]
2008-03-30 14:44 ` Anthony Liguori
2008-03-30 14:49 ` Avi Kivity
2008-03-30 14:56 ` [kvm-devel] " Anthony Liguori
2008-03-30 14:58 ` Blue Swirl
2008-03-30 15:11 ` Anthony Liguori
2008-03-30 10:18 ` Paul Brook
2008-03-30 14:42 ` Anthony Liguori
2008-03-30 18:19 ` Paul Brook
2008-03-30 19:02 ` Anthony Liguori
2008-03-30 10:25 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
2008-03-30 14:49 ` Anthony Liguori
2008-03-29 21:55 ` [Qemu-devel] [PATCH 3/6] virtio for QEMU Anthony Liguori
2008-03-30 17:25 ` Dor Laor
2008-03-30 22:59 ` [kvm-devel] " Anthony Liguori
2008-04-05 3:09 ` Anthony Liguori
2008-03-29 21:55 ` [Qemu-devel] [PATCH 4/6] virtio network driver Anthony Liguori
2008-03-30 10:27 ` Paul Brook
2008-03-30 14:47 ` Anthony Liguori
2008-03-29 21:55 ` [Qemu-devel] [PATCH 5/6] virtio block driver Anthony Liguori
2008-03-29 21:56 ` [Qemu-devel] [PATCH 6/6] virtio balloon driver Anthony Liguori
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