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Date: Wed, 10 Sep 2008 01:06:45 +0900
From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To: mingo@...hat.com
Cc: linux-kernel@...r.kernel.org, fujita.tomonori@....ntt.co.jp,
tony.luck@...el.com, joerg.roedel@....com
Subject: [PATCH 0/4] add a helper function, is_buffer_dma_capable()
This patchset adds a trivial helper function, is_buffer_dma_capable()
and cleans up some IOMMU implementations. This function is to to see
if a memory region is DMA-capable or not with the arguments, the
dma_mask (or coherent_dma_mask) of a device and the address and size
of a memory region. It's useful for IOMMUs that don't do virtual
mappings at all times.
The patch for swiotlb is a bug fix (the rest are just
cleanups). Currently, swiotlb doesn't take account of the size of a
memory region to see if if the memory region is DMA-capable.
=
arch/x86/kernel/pci-gart_64.c | 16 +++-------------
arch/x86/kernel/pci-nommu.c | 10 ++++++----
include/linux/dma-mapping.h | 5 +++++
lib/swiotlb.c | 15 ++++++++-------
4 files changed, 22 insertions(+), 24 deletions(-)
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