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Date:   Thu, 30 Jul 2020 15:20:06 +1000
From:   Stephen Rothwell <>
To:     Joerg Roedel <>, Christoph Hellwig <>
Cc:     Linux Next Mailing List <>,
        Linux Kernel Mailing List <>,
        Jerry Snitselaar <>
Subject: linux-next: manual merge of the iommu tree with the dma-mapping

Hi all,

Today's linux-next merge of the iommu tree got a conflict in:


between commit:

  2f9237d4f6df ("dma-mapping: make support for dma ops optional")

from the dma-mapping tree and commit:

  ab65ba57e3ac ("iommu/vt-d: Move Kconfig and Makefile bits down into intel directory")

from the iommu tree.

I fixed it up (I used the ;atter and applied the folowing merge fix
patch as well) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

From: Stephen Rothwell <>
Date: Thu, 30 Jul 2020 15:14:18 +1000
Subject: [PATCH] merge fix for "dma-mapping: make support for dma ops optional"

Signed-off-by: Stephen Rothwell <>
 drivers/iommu/intel/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/intel/Kconfig b/drivers/iommu/intel/Kconfig
index 877beec9d987..5337ee1584b0 100644
--- a/drivers/iommu/intel/Kconfig
+++ b/drivers/iommu/intel/Kconfig
@@ -6,6 +6,7 @@ config DMAR_TABLE
 	bool "Support for Intel IOMMU using DMA Remapping Devices"
 	depends on PCI_MSI && ACPI && (X86 || IA64)
+	select DMA_OPS
 	select IOMMU_API
 	select IOMMU_IOVA

Stephen Rothwell

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