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Re: [Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables
From: |
David Gibson |
Subject: |
Re: [Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables |
Date: |
Thu, 21 Jun 2012 11:44:11 +1000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Jun 21, 2012 at 07:29:23AM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2012-06-20 at 16:14 -0500, Anthony Liguori wrote:
>
> > Why not make life easy and fix dma_addr_t to 64-bit?
>
> No opinion on my side, that's from the original patch series, I suppose
> the goal was to avoid the overhead/bloat on 32-bit only
> platforms/targets.
More or less. I think I do set it to 64-bit later in the series.
Particularly when IOMMU was configurable off, I had it set to
target_phys_addr_t given people's propensity to bitch and moan about
the slightest theoretical bloat.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
[Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables, Benjamin Herrenschmidt, 2012/06/19
Re: [Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables, Benjamin Herrenschmidt, 2012/06/21
Re: [Qemu-devel] [PATCH 00/13] iommu series, Anthony Liguori, 2012/06/20