From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96392C43217 for ; Thu, 9 Sep 2021 07:41:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AAF060F11 for ; Thu, 9 Sep 2021 07:41:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233780AbhIIHmH (ORCPT ); Thu, 9 Sep 2021 03:42:07 -0400 Received: from pegase2.c-s.fr ([93.17.235.10]:48261 "EHLO pegase2.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352790AbhIIHmF (ORCPT ); Thu, 9 Sep 2021 03:42:05 -0400 Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4H4rXR0J6Pz9sWj; Thu, 9 Sep 2021 09:40:55 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a3HcQ-GtdMPM; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4H4rXQ622Pz9sWg; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B7DF38B77E; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id T3QWoD2RrUYV; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from po9476vm.idsi0.si.c-s.fr (po22017.idsi0.si.c-s.fr [192.168.7.20]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 92A3E8B77D; Thu, 9 Sep 2021 09:40:53 +0200 (CEST) Subject: Re: [PATCH v3 4/8] powerpc/pseries/svm: Add a powerpc version of cc_platform_has() To: Tom Lendacky , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org Cc: Sathyanarayanan Kuppuswamy , Andi Kleen , Tianyu Lan , Joerg Roedel , Christoph Hellwig , Borislav Petkov , Brijesh Singh , Paul Mackerras References: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> From: Christophe Leroy Message-ID: Date: Thu, 9 Sep 2021 07:40:51 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/8/21 10:58 PM, Tom Lendacky wrote: > Introduce a powerpc version of the cc_platform_has() function. This will > be used to replace the powerpc mem_encrypt_active() implementation, so > the implementation will initially only support the CC_ATTR_MEM_ENCRYPT > attribute. > > Cc: Michael Ellerman > Cc: Benjamin Herrenschmidt > Cc: Paul Mackerras > Signed-off-by: Tom Lendacky > --- > arch/powerpc/platforms/pseries/Kconfig | 1 + > arch/powerpc/platforms/pseries/Makefile | 2 ++ > arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++++++++++++++++ > 3 files changed, 29 insertions(+) > create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig > index 5e037df2a3a1..2e57391e0778 100644 > --- a/arch/powerpc/platforms/pseries/Kconfig > +++ b/arch/powerpc/platforms/pseries/Kconfig > @@ -159,6 +159,7 @@ config PPC_SVM > select SWIOTLB > select ARCH_HAS_MEM_ENCRYPT > select ARCH_HAS_FORCE_DMA_UNENCRYPTED > + select ARCH_HAS_CC_PLATFORM > help > There are certain POWER platforms which support secure guests using > the Protected Execution Facility, with the help of an Ultravisor > diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile > index 4cda0ef87be0..41d8aee98da4 100644 > --- a/arch/powerpc/platforms/pseries/Makefile > +++ b/arch/powerpc/platforms/pseries/Makefile > @@ -31,3 +31,5 @@ obj-$(CONFIG_FA_DUMP) += rtas-fadump.o > > obj-$(CONFIG_SUSPEND) += suspend.o > obj-$(CONFIG_PPC_VAS) += vas.o > + > +obj-$(CONFIG_ARCH_HAS_CC_PLATFORM) += cc_platform.o > diff --git a/arch/powerpc/platforms/pseries/cc_platform.c b/arch/powerpc/platforms/pseries/cc_platform.c > new file mode 100644 > index 000000000000..e8021af83a19 > --- /dev/null > +++ b/arch/powerpc/platforms/pseries/cc_platform.c > @@ -0,0 +1,26 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Confidential Computing Platform Capability checks > + * > + * Copyright (C) 2021 Advanced Micro Devices, Inc. > + * > + * Author: Tom Lendacky > + */ > + > +#include > +#include > + > +#include > +#include > + > +bool cc_platform_has(enum cc_attr attr) > +{ Please keep this function inline as mem_encrypt_active() is > + switch (attr) { > + case CC_ATTR_MEM_ENCRYPT: > + return is_secure_guest(); > + > + default: > + return false; > + } > +} > +EXPORT_SYMBOL_GPL(cc_platform_has); > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F23A5C433F5 for ; Thu, 9 Sep 2021 07:41:26 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7A040610A3 for ; Thu, 9 Sep 2021 07:41:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7A040610A3 Authentication-Results: mail.kernel.org; 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Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4H4rXQ622Pz9sWg; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B7DF38B77E; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id T3QWoD2RrUYV; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from po9476vm.idsi0.si.c-s.fr (po22017.idsi0.si.c-s.fr [192.168.7.20]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 92A3E8B77D; Thu, 9 Sep 2021 09:40:53 +0200 (CEST) Subject: Re: [PATCH v3 4/8] powerpc/pseries/svm: Add a powerpc version of cc_platform_has() To: Tom Lendacky , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org References: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> From: Christophe Leroy Message-ID: Date: Thu, 9 Sep 2021 07:40:51 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sathyanarayanan Kuppuswamy , Andi Kleen , Tianyu Lan , Joerg Roedel , Christoph Hellwig , Borislav Petkov , Brijesh Singh , Paul Mackerras Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 9/8/21 10:58 PM, Tom Lendacky wrote: > Introduce a powerpc version of the cc_platform_has() function. This will > be used to replace the powerpc mem_encrypt_active() implementation, so > the implementation will initially only support the CC_ATTR_MEM_ENCRYPT > attribute. > > Cc: Michael Ellerman > Cc: Benjamin Herrenschmidt > Cc: Paul Mackerras > Signed-off-by: Tom Lendacky > --- > arch/powerpc/platforms/pseries/Kconfig | 1 + > arch/powerpc/platforms/pseries/Makefile | 2 ++ > arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++++++++++++++++ > 3 files changed, 29 insertions(+) > create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig > index 5e037df2a3a1..2e57391e0778 100644 > --- a/arch/powerpc/platforms/pseries/Kconfig > +++ b/arch/powerpc/platforms/pseries/Kconfig > @@ -159,6 +159,7 @@ config PPC_SVM > select SWIOTLB > select ARCH_HAS_MEM_ENCRYPT > select ARCH_HAS_FORCE_DMA_UNENCRYPTED > + select ARCH_HAS_CC_PLATFORM > help > There are certain POWER platforms which support secure guests using > the Protected Execution Facility, with the help of an Ultravisor > diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile > index 4cda0ef87be0..41d8aee98da4 100644 > --- a/arch/powerpc/platforms/pseries/Makefile > +++ b/arch/powerpc/platforms/pseries/Makefile > @@ -31,3 +31,5 @@ obj-$(CONFIG_FA_DUMP) += rtas-fadump.o > > obj-$(CONFIG_SUSPEND) += suspend.o > obj-$(CONFIG_PPC_VAS) += vas.o > + > +obj-$(CONFIG_ARCH_HAS_CC_PLATFORM) += cc_platform.o > diff --git a/arch/powerpc/platforms/pseries/cc_platform.c b/arch/powerpc/platforms/pseries/cc_platform.c > new file mode 100644 > index 000000000000..e8021af83a19 > --- /dev/null > +++ b/arch/powerpc/platforms/pseries/cc_platform.c > @@ -0,0 +1,26 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Confidential Computing Platform Capability checks > + * > + * Copyright (C) 2021 Advanced Micro Devices, Inc. > + * > + * Author: Tom Lendacky > + */ > + > +#include > +#include > + > +#include > +#include > + > +bool cc_platform_has(enum cc_attr attr) > +{ Please keep this function inline as mem_encrypt_active() is > + switch (attr) { > + case CC_ATTR_MEM_ENCRYPT: > + return is_secure_guest(); > + > + default: > + return false; > + } > +} > +EXPORT_SYMBOL_GPL(cc_platform_has); > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADCAFC433F5 for ; Thu, 9 Sep 2021 07:41:01 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6473E61108 for ; Thu, 9 Sep 2021 07:41:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6473E61108 Authentication-Results: mail.kernel.org; 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Thu, 9 Sep 2021 07:40:58 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id asTTYk5uaJIe for ; Thu, 9 Sep 2021 07:40:58 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from pegase2.c-s.fr (pegase2.c-s.fr [93.17.235.10]) by smtp4.osuosl.org (Postfix) with ESMTPS id 1F32D402BF for ; Thu, 9 Sep 2021 07:40:57 +0000 (UTC) Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4H4rXR0J6Pz9sWj; Thu, 9 Sep 2021 09:40:55 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a3HcQ-GtdMPM; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4H4rXQ622Pz9sWg; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B7DF38B77E; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id T3QWoD2RrUYV; Thu, 9 Sep 2021 09:40:54 +0200 (CEST) Received: from po9476vm.idsi0.si.c-s.fr (po22017.idsi0.si.c-s.fr [192.168.7.20]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 92A3E8B77D; Thu, 9 Sep 2021 09:40:53 +0200 (CEST) Subject: Re: [PATCH v3 4/8] powerpc/pseries/svm: Add a powerpc version of cc_platform_has() To: Tom Lendacky , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org References: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> From: Christophe Leroy Message-ID: Date: Thu, 9 Sep 2021 07:40:51 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> Content-Language: en-US Cc: Andi Kleen , Tianyu Lan , Christoph Hellwig , Borislav Petkov , Brijesh Singh , Paul Mackerras X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 9/8/21 10:58 PM, Tom Lendacky wrote: > Introduce a powerpc version of the cc_platform_has() function. This will > be used to replace the powerpc mem_encrypt_active() implementation, so > the implementation will initially only support the CC_ATTR_MEM_ENCRYPT > attribute. > > Cc: Michael Ellerman > Cc: Benjamin Herrenschmidt > Cc: Paul Mackerras > Signed-off-by: Tom Lendacky > --- > arch/powerpc/platforms/pseries/Kconfig | 1 + > arch/powerpc/platforms/pseries/Makefile | 2 ++ > arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++++++++++++++++ > 3 files changed, 29 insertions(+) > create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig > index 5e037df2a3a1..2e57391e0778 100644 > --- a/arch/powerpc/platforms/pseries/Kconfig > +++ b/arch/powerpc/platforms/pseries/Kconfig > @@ -159,6 +159,7 @@ config PPC_SVM > select SWIOTLB > select ARCH_HAS_MEM_ENCRYPT > select ARCH_HAS_FORCE_DMA_UNENCRYPTED > + select ARCH_HAS_CC_PLATFORM > help > There are certain POWER platforms which support secure guests using > the Protected Execution Facility, with the help of an Ultravisor > diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile > index 4cda0ef87be0..41d8aee98da4 100644 > --- a/arch/powerpc/platforms/pseries/Makefile > +++ b/arch/powerpc/platforms/pseries/Makefile > @@ -31,3 +31,5 @@ obj-$(CONFIG_FA_DUMP) += rtas-fadump.o > > obj-$(CONFIG_SUSPEND) += suspend.o > obj-$(CONFIG_PPC_VAS) += vas.o > + > +obj-$(CONFIG_ARCH_HAS_CC_PLATFORM) += cc_platform.o > diff --git a/arch/powerpc/platforms/pseries/cc_platform.c b/arch/powerpc/platforms/pseries/cc_platform.c > new file mode 100644 > index 000000000000..e8021af83a19 > --- /dev/null > +++ b/arch/powerpc/platforms/pseries/cc_platform.c > @@ -0,0 +1,26 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Confidential Computing Platform Capability checks > + * > + * Copyright (C) 2021 Advanced Micro Devices, Inc. > + * > + * Author: Tom Lendacky > + */ > + > +#include > +#include > + > +#include > +#include > + > +bool cc_platform_has(enum cc_attr attr) > +{ Please keep this function inline as mem_encrypt_active() is > + switch (attr) { > + case CC_ATTR_MEM_ENCRYPT: > + return is_secure_guest(); > + > + default: > + return false; > + } > +} > +EXPORT_SYMBOL_GPL(cc_platform_has); > _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from pegase2.c-s.fr ([93.17.235.10]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mOEg5-008Sw0-9a for kexec@lists.infradead.org; Thu, 09 Sep 2021 07:40:59 +0000 Subject: Re: [PATCH v3 4/8] powerpc/pseries/svm: Add a powerpc version of cc_platform_has() References: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> From: Christophe Leroy Message-ID: Date: Thu, 9 Sep 2021 07:40:51 +0000 MIME-Version: 1.0 In-Reply-To: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Tom Lendacky , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org Cc: Sathyanarayanan Kuppuswamy , Andi Kleen , Tianyu Lan , Joerg Roedel , Christoph Hellwig , Borislav Petkov , Brijesh Singh , Paul Mackerras On 9/8/21 10:58 PM, Tom Lendacky wrote: > Introduce a powerpc version of the cc_platform_has() function. This will > be used to replace the powerpc mem_encrypt_active() implementation, so > the implementation will initially only support the CC_ATTR_MEM_ENCRYPT > attribute. > > Cc: Michael Ellerman > Cc: Benjamin Herrenschmidt > Cc: Paul Mackerras > Signed-off-by: Tom Lendacky > --- > arch/powerpc/platforms/pseries/Kconfig | 1 + > arch/powerpc/platforms/pseries/Makefile | 2 ++ > arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++++++++++++++++ > 3 files changed, 29 insertions(+) > create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig > index 5e037df2a3a1..2e57391e0778 100644 > --- a/arch/powerpc/platforms/pseries/Kconfig > +++ b/arch/powerpc/platforms/pseries/Kconfig > @@ -159,6 +159,7 @@ config PPC_SVM > select SWIOTLB > select ARCH_HAS_MEM_ENCRYPT > select ARCH_HAS_FORCE_DMA_UNENCRYPTED > + select ARCH_HAS_CC_PLATFORM > help > There are certain POWER platforms which support secure guests using > the Protected Execution Facility, with the help of an Ultravisor > diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile > index 4cda0ef87be0..41d8aee98da4 100644 > --- a/arch/powerpc/platforms/pseries/Makefile > +++ b/arch/powerpc/platforms/pseries/Makefile > @@ -31,3 +31,5 @@ obj-$(CONFIG_FA_DUMP) += rtas-fadump.o > > obj-$(CONFIG_SUSPEND) += suspend.o > obj-$(CONFIG_PPC_VAS) += vas.o > + > +obj-$(CONFIG_ARCH_HAS_CC_PLATFORM) += cc_platform.o > diff --git a/arch/powerpc/platforms/pseries/cc_platform.c b/arch/powerpc/platforms/pseries/cc_platform.c > new file mode 100644 > index 000000000000..e8021af83a19 > --- /dev/null > +++ b/arch/powerpc/platforms/pseries/cc_platform.c > @@ -0,0 +1,26 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Confidential Computing Platform Capability checks > + * > + * Copyright (C) 2021 Advanced Micro Devices, Inc. > + * > + * Author: Tom Lendacky > + */ > + > +#include > +#include > + > +#include > +#include > + > +bool cc_platform_has(enum cc_attr attr) > +{ Please keep this function inline as mem_encrypt_active() is > + switch (attr) { > + case CC_ATTR_MEM_ENCRYPT: > + return is_secure_guest(); > + > + default: > + return false; > + } > +} > +EXPORT_SYMBOL_GPL(cc_platform_has); > _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec