From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 41xQxl0qsWzDqk8 for ; Fri, 24 Aug 2018 13:00:10 +1000 (AEST) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w7O2wsud003944 for ; Thu, 23 Aug 2018 23:00:08 -0400 Received: from e13.ny.us.ibm.com (e13.ny.us.ibm.com [129.33.205.203]) by mx0a-001b2d01.pphosted.com with ESMTP id 2m24g2t4qg-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 23 Aug 2018 23:00:08 -0400 Received: from localhost by e13.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 23 Aug 2018 23:00:07 -0400 From: Thiago Jung Bauermann 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 Subject: [RFC PATCH 02/11] powerpc/svm: Select CONFIG_DMA_DIRECT_OPS and CONFIG_SWIOTLB Date: Thu, 23 Aug 2018 23:59:24 -0300 In-Reply-To: <20180824025933.24319-1-bauerman@linux.ibm.com> References: <20180824025933.24319-1-bauerman@linux.ibm.com> Message-Id: <20180824025933.24319-3-bauerman@linux.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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