linux-kernel - Re: [PATCH 4/7] swiotlb: Allow arch override of address_needs

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Date:	Thu, 09 Apr 2009 12:54:08 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
CC:	galak@...nel.crashing.org, hch@...radead.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	ian.campbell@...rix.com, beckyb@...nel.crashing.org
Subject: Re: [PATCH 4/7] swiotlb: Allow arch override of address_needs_mapping

FUJITA Tomonori wrote:
> Hmm, I think that ia64 use swiotlb_alloc_boot too.
>
> ia64 uses swiotlb in two ways; using only swiotlb, using swiotlb and
> hw iommu. The latter is similar what x86 Calgary does.
>   

Yes, I see.  It also calls swiotlb_init() -> 
swiotlb_init_with_default_size(), though I got lost in the 
machvec/platform setup, so I couldn't quite work out where 
platform_dma_init() gets called from.

But I couldn't see any x86 references to 
swiotlb_late_init_with_default_size().

    J
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