From patchwork Wed Dec 1 16:02:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 12650297 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CFC1C4332F for ; Wed, 1 Dec 2021 16:03:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351298AbhLAQGb (ORCPT ); Wed, 1 Dec 2021 11:06:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231144AbhLAQG3 (ORCPT ); Wed, 1 Dec 2021 11:06:29 -0500 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9A8CC061748; Wed, 1 Dec 2021 08:03:08 -0800 (PST) Received: by mail-pj1-x1029.google.com with SMTP id fv9-20020a17090b0e8900b001a6a5ab1392so1992748pjb.1; Wed, 01 Dec 2021 08:03:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=i+xUpMEUxrmLaLZETYGitNsZhfrMVhJB1Bk6Yp08byU=; b=br/8rZr5MsJhI8n1irXI1gp9Qy4y2qB0ZN5gBXyv9j4Su5bhkV81nOXq9DGZu89aNd 1yE59r1UZL97RAiD6x+SXTYEoUeu7G0jCsBQ1cuLrPvmNB9yCPuhglIAjJYi604mfSQh gyy1MrYjqf6FuZtwg+yZTOfgs9SEgL6VOT93jo6Lr0hZDIeKaRrkgfgJp35M71zw1HjF mCa+7WRc/5GxMq2fBfHGjWIosZhHgGj4pZbJ+Vjey1HAEvVpBkgPAoLT3LqFfLNjLY2o qMt8D2/BJNN7vwve4krmx/83c7M5pnGp6HV82Z4b4QIdszQpO2qvXOEgIjSwmrsLY0WX XfJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=i+xUpMEUxrmLaLZETYGitNsZhfrMVhJB1Bk6Yp08byU=; b=YQbBRiAPcMKeSHexeiuBu4amEtMPjTSrulDHwrRrNiO2FCa+7nZACzeEkgVEPaEeat toBiYRejdt08oFzDr9k9xbNI28rGyvHJbfiCZgY6/zPcqzEl8EHjtkBX7RK4elwdbPOe 6NtEvAK3nFDHaQgR2TlxA+CWtWYEambAWl7I09NUgOLfNegHKTA0ar/iC7Bq7ch5Iu/V WYEMHBHjCIKxs9vc2N3HEFwlCUu8jyovIogF/qI4OW7eTeV1K0JOkPXKwSG2Pqwr9wIL ns1iSweLzCkBnNZhPbfgHwgXo9So+yS3M6W4rFNKIRbHnqOCaGj7tCalOqq5ncfx3xaM opUQ== X-Gm-Message-State: AOAM532+9FeZTfsqioYl/Q2U8pHMYYsAvkAnGEpRpA+rbpNviNYgOmYd yt+zoPja4nCHyTMLbEziMNc= X-Google-Smtp-Source: ABdhPJzYMUML3tqpL7gDFerbs5Ms9xF8HxCcNqwI0mV93rIMF31+44VhoYZsU5gprIBYp9oOrgPvNQ== X-Received: by 2002:a17:902:748c:b0:142:5f2f:1828 with SMTP id h12-20020a170902748c00b001425f2f1828mr8493620pll.4.1638374588262; Wed, 01 Dec 2021 08:03:08 -0800 (PST) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:f:7fe9:3f1e:749e:5d26]) by smtp.gmail.com with ESMTPSA id i193sm260316pfe.87.2021.12.01.08.03.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Dec 2021 08:03:08 -0800 (PST) From: Tianyu Lan To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, jgross@suse.com, sstabellini@kernel.org, boris.ostrovsky@oracle.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de, hch@infradead.org, m.szyprowski@samsung.com, robin.murphy@arm.com, Tianyu.Lan@microsoft.com, thomas.lendacky@amd.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com Cc: iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, brijesh.singh@amd.com, konrad.wilk@oracle.com, hch@lst.de, parri.andrea@gmail.com, dave.hansen@intel.com Subject: [PATCH V3 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() Date: Wed, 1 Dec 2021 11:02:53 -0500 Message-Id: <20211201160257.1003912-3-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211201160257.1003912-1-ltykernel@gmail.com> References: <20211201160257.1003912-1-ltykernel@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Tianyu Lan Hyper-V provides Isolation VM which has memory encrypt support. Add hyperv_cc_platform_has() and return true for check of GUEST_MEM_ENCRYPT attribute. Signed-off-by: Tianyu Lan --- arch/x86/kernel/cc_platform.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/x86/kernel/cc_platform.c b/arch/x86/kernel/cc_platform.c index 03bb2f343ddb..f3bb0431f5c5 100644 --- a/arch/x86/kernel/cc_platform.c +++ b/arch/x86/kernel/cc_platform.c @@ -11,6 +11,7 @@ #include #include +#include #include static bool __maybe_unused intel_cc_platform_has(enum cc_attr attr) @@ -58,9 +59,23 @@ static bool amd_cc_platform_has(enum cc_attr attr) #endif } +static bool hyperv_cc_platform_has(enum cc_attr attr) +{ +#ifdef CONFIG_HYPERV + if (attr == CC_ATTR_GUEST_MEM_ENCRYPT) + return true; + else + return false; +#else + return false; +#endif +} bool cc_platform_has(enum cc_attr attr) { + if (hv_is_isolation_supported()) + return hyperv_cc_platform_has(attr); + if (sme_me_mask) return amd_cc_platform_has(attr);