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Subject[RFC PATCH 02/11] powerpc/svm: Select CONFIG_DMA_DIRECT_OPS and CONFIG_SWIOTLB
From: Anshuman Khandual <>

Ultravisor based secure guest platforms will use generic SWIOTLB DMA API
(i.e swiotlb_dma_ops structure) available under the CONFIG_DMA_DIRECT_OPS
config. Also base CONFIG_SWIOTLB needs to be explicitly selected as well.
Select both these config options on powerpc server platforms with secure
guest support.

Signed-off-by: Anshuman Khandual <>
Signed-off-by: Thiago Jung Bauermann <>
arch/powerpc/Kconfig | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index f786c962edf0..90f73d15f58a 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -444,6 +444,8 @@ config PPC_SVM
bool "Secure virtual machine (SVM) support for POWERPC"
default n
depends on PPC_PSERIES
+ select SWIOTLB
Support secure guests on POWERPC. There are certain POWER platforms
which support secure guests with the help of an Ultravisor executing
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