From mboxrd@z Thu Jan 1 00:00:00 1970 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 Message-ID: <20180824162535.22798-3-bauerman@linux.ibm.com> References: <20180824162535.22798-1-bauerman@linux.ibm.com> Return-path: In-Reply-To: <20180824162535.22798-1-bauerman@linux.ibm.com> Sender: linux-kernel-owner@vger.kernel.org To: linuxppc-dev@lists.ozlabs.org Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Alexey Kardashevskiy , Anshuman Khandual , Benjamin Herrenschmidt , Christoph Hellwig , Michael Ellerman , Mike Anderson , Paul Mackerras , Ram Pai , Anshuman Khandual , Thiago Jung Bauermann List-Id: iommu@lists.linux-foundation.org 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 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