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Date: Fri, 11 May 2012 11:01:52 +0900
Message-ID: <CALYq+qS8jc+d2w0Jfx5Ci0-KShrHTV=p0f_Py8g_17PSOauadw@mail.gmail.com>
Subject: [Linaro-mm-sig] [PATCH 1/3] [RFC] Kernel Virtual Memory allocation
 issue in dma-mapping framework
From: Abhinav Kochhar <kochhar.abhinav@gmail.com>
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To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org, linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, Kyungmin Park <kyungmin.park@samsung.com>

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With this add a new attribute that can be passsed to dma-mapping IOMMU apis
to differentiate between kernel and user allcoations.

diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h

index 547ab56..861df09 100644

--- a/include/linux/dma-attrs.h

+++ b/include/linux/dma-attrs.h

@@ -15,6 +15,7 @@ enum dma_attr {

        DMA_ATTR_WEAK_ORDERING,

        DMA_ATTR_WRITE_COMBINE,

        DMA_ATTR_NON_CONSISTENT,

+       DMA_ATTR_USER_SPACE,

        DMA_ATTR_MAX,

 };

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<p>With this add a new attribute that can be passsed to dma-mapping IOMMU a=
pis to differentiate between kernel and user allcoations.<br></p>
<p>diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h</p>
<p>index 547ab56..861df09 100644</p>
<p>--- a/include/linux/dma-attrs.h</p>
<p>+++ b/include/linux/dma-attrs.h</p>
<p>@@ -15,6 +15,7 @@ enum dma_attr {</p>
<p>=A0 =A0 =A0 =A0 DMA_ATTR_WEAK_ORDERING,</p>
<p>=A0 =A0 =A0 =A0 DMA_ATTR_WRITE_COMBINE,</p>
<p>=A0 =A0 =A0 =A0 DMA_ATTR_NON_CONSISTENT,</p>
<p>+ =A0 =A0 =A0 DMA_ATTR_USER_SPACE,</p>
<p>=A0 =A0 =A0 =A0 DMA_ATTR_MAX,</p>
<p>=A0};<br></p>

--f46d04428c9cc4967c04bfb91e68--

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