Messages in this thread Patch in this message | | | From | Thiago Jung Bauermann <> | Subject | [RFC PATCH 02/11] powerpc/svm: Select CONFIG_DMA_DIRECT_OPS and CONFIG_SWIOTLB | Date | Fri, 24 Aug 2018 13:25:26 -0300 |
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From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
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 <khandual@linux.vnet.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> --- 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 DMA_DIRECT_OPS + select SWIOTLB help 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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