linux-kernel - Re: [PATCH 18/23] AMD IOMMU: simplify dma_mask_to

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Message-Id: <20080918041717S.fujita.tomonori@lab.ntt.co.jp>
Date:	Thu, 18 Sep 2008 04:20:20 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	joerg.roedel@....com
Cc:	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org
Subject: Re: [PATCH 18/23] AMD IOMMU: simplify dma_mask_to_pages

On Wed, 17 Sep 2008 18:52:52 +0200
Joerg Roedel <joerg.roedel@....com> wrote:

> The current calculation is very complicated. This patch replaces it with
> a much simpler version.
> 
> Signed-off-by: Joerg Roedel <joerg.roedel@....com>
> ---
>  arch/x86/kernel/amd_iommu.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)

I think that you can use iommu_device_max_index() for what
dma_mask_to_pages does.
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