From nobody Sun Feb 8 19:11:29 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=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1754306960; cv=none; d=zohomail.com; s=zohoarc; b=MAop4p2Fw/nRLwxPbaAVfO65Ki8L3sDsfJiKMNu9Vb5UrPrUlTDWH9jpoY27Z5OwwKUlqFEdFpxEAfnbmEmUelHOwGyb1o3ZbTJCUspuiZ9M0UtwyPfpLtTuE85k0lnYmtzGdkQv+lTFqAL2bRsaj6aWpO9o7clheSuunVCndaI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1754306960; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=4tQDWXUl/GGUvwCEmhBVfJ90ztk2vRfzUXGib0Q+gbg=; b=PVHv2iTbmwh96OIFObYc5r6IXPDLqt0h2Y31ayoGi6GokCM6gXK+vDRMV4xcXlw8mvTTKHaUycj3w6tzAokJLeNLYRWLgqsEUqXpdhOZlVFn2y1fbiSu4lv4/tRpPNeAuLfzKvxoMdDKoiXy0sY2VyHvJVE4QAunCXe/8Oena04= 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=quarantine dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1754306960073565.1009188565948; Mon, 4 Aug 2025 04:29:20 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1069121.1432956 (Exim 4.92) (envelope-from ) id 1uitNH-0004EO-GM; Mon, 04 Aug 2025 11:29:03 +0000 Received: by outflank-mailman (output) from mailman id 1069121.1432956; Mon, 04 Aug 2025 11:29:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1uitNH-0004EH-DC; Mon, 04 Aug 2025 11:29:03 +0000 Received: by outflank-mailman (input) for mailman id 1069121; Mon, 04 Aug 2025 11:29:01 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1uitNF-0004Dv-Gf for xen-devel@lists.xenproject.org; Mon, 04 Aug 2025 11:29:01 +0000 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [2a00:1450:4864:20::535]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 37118024-7126-11f0-b898-0df219b8e170; Mon, 04 Aug 2025 13:28:59 +0200 (CEST) Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-61557997574so6436142a12.3 for ; Mon, 04 Aug 2025 04:28:59 -0700 (PDT) Received: from [10.156.60.236] (ip-037-024-206-209.um08.pools.vodafone-ip.de. [37.24.206.209]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-615a8fe77cfsm6796126a12.42.2025.08.04.04.28.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 Aug 2025 04:28:57 -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" X-Inumbo-ID: 37118024-7126-11f0-b898-0df219b8e170 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1754306939; x=1754911739; darn=lists.xenproject.org; h=content-transfer-encoding:autocrypt:subject:from:cc:to :content-language:user-agent:mime-version:date:message-id:from:to:cc :subject:date:message-id:reply-to; bh=4tQDWXUl/GGUvwCEmhBVfJ90ztk2vRfzUXGib0Q+gbg=; b=cetFKnwoYrcJIGV+jUlCxNOVpXd85RTfD4wAjdylpfTB4V7ul1e9xDNZC1xJy6BFQR DaIhgMFvOXdzHUE6C61LlSndSz7hjtnTP0ZZc+9CczeCNKrC0UaswLwmK3uGLmBeKwRc cCSBc2bBCnfLgBBaIvkLKYJJXeOy5xPoEpztG51d6/Qk8ozyEfieTeBBUIhIMtphd/z4 rZQHIFQhybPwg6trfHScvgASMZCBkjSYzlPgKHbPcWBMkdKmPYDNIHJ9h6/4LWK9v9gA YIcLgz5cJ9kqXqFvQRk6UOLOWsbb12iWvYFsyHVMe2f02ECeeJRhhAIHE1WPTemus5VB Hklg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754306939; x=1754911739; h=content-transfer-encoding:autocrypt:subject:from:cc:to :content-language:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=4tQDWXUl/GGUvwCEmhBVfJ90ztk2vRfzUXGib0Q+gbg=; b=deLW5luLU72JIoncrve4a7W/YC6PByR8PrSLGYpdUYg3v4HI2o01cHT99In5ooZprX npewE1znuIG/P/HMNAi5ChKMD5Eme5MLC6yfP12d3r5391tPcJ7s8QDa8Oo+mPl1NPPP NNdPdyvKquijFi53f1C0mgJ8nro5ZVl+Mbm3Mk5afq5wRCoNwnUz1KKAIv31mnmQj2Id hvd9CbXID1O4+U5wX48xz5HhFTkRApWhDTiSZHL9bmm6Rt7ubTsIwuRcf8ZmgvRFmhwf DOpoPm99PhonobmGc8+2TFwpyfEYOs3mTLMvAFPGPBzjEdG3XSU+c4rOXGQlJGJyKCTj fKZA== X-Gm-Message-State: AOJu0YywUVH3IFOQr8alH2ol79olLpIRjWzvxVfcg+k18Lm3YiyDCLbZ 0RUpHGnZWHwNVyMGEQle2MjUplFPs/W6W/t+Iak9xvB9W1wPhRMHSI+LiL7ImjFQgHJTI2qexiW SxrA= X-Gm-Gg: ASbGncvfBs8zHHQ8zZNM08XRiNMmZmcK6N8S3WbAHCqzLNCFc+W5SEi+b3sGxICcx9L xcCAZA0iyzp60rHcXV87Lej7xYwix38wrNbPsl0vnIrbgvynoGnVe+VdQxGCoFXtq2eXBbf/WSK w9ZkdtG0BsQSjDvf0J3E6xcgx7rEqORRkuZ1p1FRNX1lDZ3s9vexnVBbQ1yv2JwWfKrPocAuVik x9iEPCOhqcHJ9NZqBukIi+3RgwMP6tVJSecrTHTYYVw+/dsw1lDGrGGXl9+iM8uTbYSKo9QMNSd hYT0Q/gF/ZZG3+ux4dsTrB7elHKx5zRxte6QBwop2+Rvai8QnqhG3Z41Nz6sRNKBoJWwGeKJgkA jid9gN1l3NsWaESSDU/VSR09Gr6B65WIJMGQzM3HGQ2JXly/vccgsy94FtsNpAycXzMtYc/D6Wf S4je/2DyevlGWw1qbppQ== X-Google-Smtp-Source: AGHT+IGPpsnKx/zspjBOkezE2xrWpZCzUKKHIyv8n2GXqG5L/naHwtmxgFiaDyA9lkyd5Uudp9FTTA== X-Received: by 2002:a05:6402:274c:b0:615:539b:7acf with SMTP id 4fb4d7f45d1cf-615e6eb694bmr7184812a12.2.1754306938220; Mon, 04 Aug 2025 04:28:58 -0700 (PDT) Message-ID: Date: Mon, 4 Aug 2025 13:28:57 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= From: Jan Beulich Subject: [PATCH] x86/CPU: extend is_forced_cpu_cap()'s "reach" Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1754306962951124100 Content-Type: text/plain; charset="utf-8" "cpuid=3Dno-rdrand" cannot actually be used to suppress the respective boot warning on certain AMD hardware. That's because cleared_caps[] are only applied after the ->c_init() hooks ran, i.e. cpu_has() still returns true in init_amd(). Fixes: 93401e28a84b ("x86: clear RDRAND CPUID bit on AMD family 15h/16h") Signed-off-by: Jan Beulich Acked-by: Andrew Cooper --- TBD: It's not clear whether doing it this way is actually a good idea; it may need to be two of the three call sites to be amended by a new is_cleared_cpu_cap(). Also relevant to "x86/AMD: disable RDSEED on Fam17 model 47 stepping 0". --- a/xen/arch/x86/cpu/common.c +++ b/xen/arch/x86/cpu/common.c @@ -108,7 +108,7 @@ void __init setup_force_cpu_cap(unsigned =20 bool __init is_forced_cpu_cap(unsigned int cap) { - return test_bit(cap, forced_caps); + return test_bit(cap, forced_caps) || test_bit(cap, cleared_caps); } =20 static void cf_check default_init(struct cpuinfo_x86 * c)