From nobody Mon Aug 24 20:42:53 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=reject dis=none) header.from=google.com ARC-Seal: i=1; a=rsa-sha256; t=1782934383; cv=none; d=zohomail.com; s=zohoarc; b=c8bNqwDG0wP8WmLU8Qr+AbPOIDh/c9f1kGtQv5s3j6cyvpgiP38oG0krTCtbzy4yqJC7qrjjUDZeJ205JzQfZmNxWMCTRVh0M03yh3fEFlWDaPfu3ErQ9kdlTitjEaOo7tvw2DzJzdLM6ZuuAcaS0oD3YC1yhfTi4fIo3Uqu+i4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1782934383; h=Content-Type:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=IPCn9toL5FYXOHslttK0Lqj/45O4+f3kFotppLV6+ls=; b=M1FfedCPtzc1fhZkZCn2mnEnlZLNn5DzKZInP6sM27Z6lGcndYjdougjilIFW3eASca77NTMwoXBxaOzll6zw98P6PJ6CAiKW8EHoIqb0jJYJGecZKyT8y7w7f+s/qH9FrGgGOVsSByzv+5EFdM3myJSt1tNmDOIwOWcrqux/dg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1782934383551589.3776602629003; Wed, 1 Jul 2026 12:33:03 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1350372.1607870 (Exim 4.92) (envelope-from ) id 1wf0fn-0000l7-Q3; Wed, 01 Jul 2026 19:32:39 +0000 Received: by outflank-mailman (output) from mailman id 1350372.1607870; Wed, 01 Jul 2026 19:32:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1wf0fn-0000kc-Kq; Wed, 01 Jul 2026 19:32:39 +0000 Received: by outflank-mailman (input) for mailman id 1350372; Wed, 01 Jul 2026 19:32:38 +0000 Received: from mx.expurgate.net ([195.190.135.10]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from <3UmtFagYKCZcJ51EA37FF7C5.3FDO5E-45M5CC9JKJ.O5EGIFA53K.FI7@flex--seanjc.bounces.google.com>) id 1wf0fm-0000Ks-1X for xen-devel@lists.xenproject.org; Wed, 01 Jul 2026 19:32:38 +0000 Received: from mx.expurgate.net (helo=localhost) by mx.expurgate.net with esmtp id 1wf0fl-00B3ua-Eq for xen-devel@lists.xenproject.org; Wed, 01 Jul 2026 21:32:37 +0200 Received: from [10.42.69.6] (helo=localhost) by localhost with ESMTP (eXpurgate MTA 0.9.1) (envelope-from <3UmtFagYKCZcJ51EA37FF7C5.3FDO5E-45M5CC9JKJ.O5EGIFA53K.FI7@flex--seanjc.bounces.google.com>) id 6a456b3e-5cb7-0a2a0a5109dd-0a2a4506aae4-24 for ; Wed, 01 Jul 2026 21:32:37 +0200 Received: from [209.85.215.201] (helo=mail-pg1-f201.google.com) by tlsNG-16d1c6.mxtls.expurgate.net with ESMTPS (eXpurgate 4.57.1) (envelope-from <3UmtFagYKCZcJ51EA37FF7C5.3FDO5E-45M5CC9JKJ.O5EGIFA53K.FI7@flex--seanjc.bounces.google.com>) id 6a456b53-08de-0a2a45060019-d155d7c9e100-3 for ; Wed, 01 Jul 2026 21:32:37 +0200 Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-c96b4f58ddcso763901a12.3 for ; Wed, 01 Jul 2026 12:32:36 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Authentication-Results: eu.smtp.expurgate.cloud; dkim=pass header.s=20251104 header.d=google.com header.i="@google.com" header.h="Cc:To:From:Subject:Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782934355; x=1783539155; darn=lists.xenproject.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=IPCn9toL5FYXOHslttK0Lqj/45O4+f3kFotppLV6+ls=; b=fKuzCDImPpzNTZoIiyIzudIzmp7PizB2cS8gFCEMti89zInSppOOer90Uaa3SlUzVV TRIthsiBEGLm12JGRsIU9nJIW/LfY56kg8MBtOURzSTW90lUkv0Ejcz3ChZsMTSWH6pR JI1T+Q4oj/LzZjRh3aW8eh9WXQjYd4OLyeIbB3iVSmA8y3M6Qllwy7WbNhdRlAJt+B94 P6EQnNVIY550MiHy9Vmd91gMFBh4xiUrCyObX19Lmdqa6KhAPrgX8rdT4esUZT93Y6L6 VlOK249Sz/OMf0Xa/RmEbO40q9YBKSMnvgCd1+PzUTf3B7vCJtucCwW5Q7kZQUEl/0Fi wNbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782934355; x=1783539155; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=IPCn9toL5FYXOHslttK0Lqj/45O4+f3kFotppLV6+ls=; b=SOBTWvg56CoQgyRzIhniFsTz4keq1x2/LYn9EvdXsT5IgY5bTnjaWxltYHMovEykAA 4Dufgv+iYDR/s7ClK3bUndhlw/XwDUfpyCCFTuBwkv8G2cJP0LhuxlWkvQTtCKhe2Lc3 Fv0aYsM1eQWIKcRDi4VZUuZGBwhhIBKnqEFU68Ox6MjRh+5oN9ybox0KnIZ9n1qQF8Kf Ea8QDh3vWRGp93HM+YkNXqJSeBfYhO8v46Z65lFrcdbVq9Tl9OGPWNPDbSj7vwsUWHl0 imEwysStr+z9mSMWhsxLOuBNEkHyJ7nmKUqEdAkDz4QZTkfRBn6+nexFZwDT/ij7MBmZ pmUw== X-Forwarded-Encrypted: i=1; AFNElJ+heBJCj2AD8Rb7gJ+D+Abu1qjQvyjNrHuV2KKPYMrujOlHU9XrVt6vezUchnyce6veMhhXjFUxMMo=@lists.xenproject.org X-Gm-Message-State: AOJu0YwVijIU1K4KX+vsX4ayrCN8pb2PkGZTVj4Ej82V2uhMl6akEI9T +5Julx7rKgGTlIVu6l4w/18hlutYBnRqCx8JOMmNSNyNhvanJlzTMcmVs6XZeT5/ZHG9lP6OsuD XvYvaIg== X-Received: from pgll126.prod.google.com ([2002:a63:2584:0:b0:c85:1159:ffb2]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6300:6705:b0:3bf:7bf7:7913 with SMTP id adf61e73a8af0-3bff40c93d7mr2592804637.14.1782934354816; Wed, 01 Jul 2026 12:32:34 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 1 Jul 2026 12:31:28 -0700 In-Reply-To: <20260701193212.749551-1-seanjc@google.com> Mime-Version: 1.0 References: <20260701193212.749551-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260701193212.749551-8-seanjc@google.com> Subject: [PATCH v5 07/51] x86/sev: Move check for SNP Secure TSC support to tsc_early_init() From: Sean Christopherson To: Jonathan Corbet , Paolo Bonzini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Kiryl Shutsemau , Rick Edgecombe , Sean Christopherson , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Ajay Kaher , Alexey Makhalov , Jan Kiszka , Andy Lutomirski , Peter Zijlstra , Juergen Gross , Daniel Lezcano , John Stultz Cc: Shuah Khan , "H. Peter Anvin" , Vitaly Kuznetsov , Broadcom internal kernel review list , Boris Ostrovsky , Stephen Boyd , linux-doc@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, Tom Lendacky , Nikunj A Dadhania , David Woodhouse , David Woodhouse , Michael Kelley , Thomas Gleixner X-purgate-ID: tlsNG-16d1c6/1782934357-C5D3D68D-E6CE8521/0/0 X-purgate-type: clean X-purgate-size: 1587 X-ZohoMail-DKIM: pass (identity @google.com) X-ZM-MESSAGEID: 1782934384101158500 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Move the check on having a Secure TSC to the common tsc_early_init() so that it's obvious that having a Secure TSC is conditional, and to prepare for adding TDX to the mix (blindly initializing *both* SNP and TDX TSC logic looks especially weird). No functional change intended. Cc: Tom Lendacky Reviewed-by: Nikunj A Dadhania Reviewed-by: David Woodhouse Signed-off-by: Sean Christopherson --- arch/x86/coco/sev/core.c | 3 --- arch/x86/kernel/tsc.c | 3 ++- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c index 665de1aea0ee..403dcea86452 100644 --- a/arch/x86/coco/sev/core.c +++ b/arch/x86/coco/sev/core.c @@ -2025,9 +2025,6 @@ void __init snp_secure_tsc_init(void) unsigned long tsc_freq_mhz; void *mem; =20 - if (!cc_platform_has(CC_ATTR_GUEST_SNP_SECURE_TSC)) - return; - mem =3D early_memremap_encrypted(sev_secrets_pa, PAGE_SIZE); if (!mem) { pr_err("Unable to get TSC_FACTOR: failed to map the SNP secrets page.\n"= ); diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 482cc3a8999a..8f1604ffe986 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1509,7 +1509,8 @@ void __init tsc_early_init(void) if (is_early_uv_system()) return; =20 - snp_secure_tsc_init(); + if (cc_platform_has(CC_ATTR_GUEST_SNP_SECURE_TSC)) + snp_secure_tsc_init(); =20 if (!determine_cpu_tsc_frequencies(true)) return; --=20 2.55.0.rc0.799.gd6f94ed593-goog