Allow distributions to disable the Intel and/or AMD IOMMU devices.

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
        v1->v2: don't include x86-iommu.o unconditionally

 default-configs/i386-softmmu.mak   | 2 ++
 default-configs/x86_64-softmmu.mak | 2 ++
 hw/i386/Makefile.objs              | 4 ++--
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
index 3326e3e0bb..9e5a29fa4a 100644
--- a/default-configs/i386-softmmu.mak
+++ b/default-configs/i386-softmmu.mak
@@ -63,3 +63,5 @@ CONFIG_PXB=y
 CONFIG_ACPI_VMGENID=y
 CONFIG_FW_CFG_DMA=y
 CONFIG_I2C=y
+CONFIG_VTD=y
+CONFIG_AMD_IOMMU=y
diff --git a/default-configs/x86_64-softmmu.mak 
b/default-configs/x86_64-softmmu.mak
index 1c6cda1d9a..7baf91b921 100644
--- a/default-configs/x86_64-softmmu.mak
+++ b/default-configs/x86_64-softmmu.mak
@@ -63,3 +63,5 @@ CONFIG_PXB=y
 CONFIG_ACPI_VMGENID=y
 CONFIG_FW_CFG_DMA=y
 CONFIG_I2C=y
+CONFIG_VTD=y
+CONFIG_AMD_IOMMU=y
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index fd279e7584..fa87a14152 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -2,8 +2,8 @@ obj-$(CONFIG_KVM) += kvm/
 obj-y += multiboot.o
 obj-y += pc.o pc_piix.o pc_q35.o
 obj-y += pc_sysfw.o
-obj-y += x86-iommu.o intel_iommu.o
-obj-y += amd_iommu.o
+obj-$(CONFIG_VTD) += x86-iommu.o intel_iommu.o
+obj-$(CONFIG_AMD_IOMMU) += x86-iommu.o amd_iommu.o
 obj-$(CONFIG_XEN) += ../xenpv/ xen/
 obj-$(CONFIG_VMPORT) += vmport.o
 obj-$(CONFIG_VMMOUSE) += vmmouse.o
-- 
2.14.3


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