From patchwork Wed Mar 26 08:45:09 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jan Beulich X-Patchwork-Id: 14029893 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 96D71C36008 for ; Wed, 26 Mar 2025 08:45:30 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.927294.1330046 (Exim 4.92) (envelope-from ) id 1txMNy-0004fX-3z; Wed, 26 Mar 2025 08:45:18 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 927294.1330046; Wed, 26 Mar 2025 08:45:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1txMNy-0004fQ-05; Wed, 26 Mar 2025 08:45:18 +0000 Received: by outflank-mailman (input) for mailman id 927294; Wed, 26 Mar 2025 08:45:16 +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 1txMNw-0004fK-Ko for xen-devel@lists.xenproject.org; Wed, 26 Mar 2025 08:45:16 +0000 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [2a00:1450:4864:20::32a]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id a0dd904b-0a1e-11f0-9ffa-bf95429c2676; Wed, 26 Mar 2025 09:45:11 +0100 (CET) Received: by mail-wm1-x32a.google.com with SMTP id 5b1f17b1804b1-43cf06eabdaso60079075e9.2 for ; Wed, 26 Mar 2025 01:45:11 -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 5b1f17b1804b1-43d43f43e50sm223821745e9.12.2025.03.26.01.45.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Mar 2025 01:45:10 -0700 (PDT) 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: a0dd904b-0a1e-11f0-9ffa-bf95429c2676 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1742978711; x=1743583511; 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=ThFG/mAw83Ey+P00bpzBVT1gQWokGrngj1fNehpPLsk=; b=TPs/O/JSkjI8XXTJPOOvxXPp4KhJrpgVBsKL3tO5PFprRGDw9UKNGfzE4y5aIYKGvF 9FN59gKM5BIleDdFnSd1JKVVcF4a5aCyrRlmPGlSm0oNyaisiOu+8MoVJRSLVg+tBxzm OGDG4nnWBJVuKD4MiSbVnPrbqgrWaqrIWJymRHiKhKiMdTf6Pngx/xDVkExMbr/O2llN hJB2y6vvWZrCzBhfMXHPBTooI9rKsOsP/xAnZLCilTHb6MT7jYDLn6dZ3JeWdX9CmaCu Xtrd28tNtH/RPay8X0eQxUql/EGfnPiI2Xjj1IHAyzSmUK8aK0DWQ2/8EoxvYdLkX5kO bXYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742978711; x=1743583511; 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=ThFG/mAw83Ey+P00bpzBVT1gQWokGrngj1fNehpPLsk=; b=vektz8/CeEBdjRX/M4Ji8KqSPd5B6Xhm4I1xofiX06/BG+iD2anmy0ZUdiKIsL7qYJ qePmCAF0NfyNXcbQr3y9Qj+PmXayxAmM7Zli4LlccvQq8h6AStWKGz54NjDNvdSJtgdR hJYAifnoOMyblA/2ZwsJy7HYZsxAYlctqFnu0XlOYJeREdGfSIE7ZYQ359jEtJ2mUN/h pDemTFkXSQapWH/pMe4Bt3YJ+r9Sb8f/Vgs8Q7mtEjAKdBoykCGadqMYkqw/6EWTMLg1 xImItnasTLPqzpFYwJbyxpT7TJEI1z9Xir81n/+EWWW5jSLr/8CHwVhNUy3snzkFo7t0 TOjQ== X-Gm-Message-State: AOJu0YwpbBseYWNUl5n2I7LmWp0eMa6i5jzj8qLSkhOmVaFCAWd5b/JJ M3M9S4jb5lcT51tUZ7qTwsTnd7spFFmugzTchJGWba+3yBcWRCdaPPxwNafgkKaV4Nr0m+Mms1A = X-Gm-Gg: ASbGncvb9ZZ4cSHZsTo3BmSqPtac820sUc1LST8QOp9xpmDGfWKkdv7mrBRx7xxIc9E +WIuWyadjXz8PlcvbGJu8erisxXbEmEpEpXOqxY+pPqlLkqM7QbjtkouHk9Yd+W7t3pL5wjUQNL gxZo8AbMW+dB1p3O1vFLYvY+2alPj/8B/gYpJLfTAPl8NFf2KB7yZVowFORxkNBoYQg1xAXWgB9 XgVy9uSsgOEgYwv2m05uuOY4zAU/Ez8El/X1t9FQwFVH96y83CMjTlxRBmb2O2b9mkI/W1M3jvF 3cHjrRneAmUioMVGruYaUWYPmxAms94EIFej70FdICTlrGBVMKUHgCnzvZDiX92UCiQfjRoQye7 sJSXrNiljR7ha6pioQ/+Xa5pamCZ4UmG0t9OeifAE X-Google-Smtp-Source: AGHT+IGXclyPgZTc+a160hhj0+0xj9CmWHnuHXKynkMFctv3tPO5i+nxpFiJJ07Cqe7/sikOVoPEUQ== X-Received: by 2002:a05:600c:3d8c:b0:43c:f3e4:d6f7 with SMTP id 5b1f17b1804b1-43d50a58731mr195883865e9.31.1742978710707; Wed, 26 Mar 2025 01:45:10 -0700 (PDT) Message-ID: Date: Wed, 26 Mar 2025 09:45:09 +0100 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?= =?utf-8?q?=C3=A9?= From: Jan Beulich Subject: [PATCH] x86/PVH: expose OEMx ACPI tables to Dom0 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 What they contain we don't know, but we can't sensibly hide them. On my Skylake system OEM1 (with a description of "INTEL CPU EIST") is what contains all the _PCT, _PPC, and _PSS methods, i.e. about everything needed for cpufreq. (_PSD interestingly are in an SSDT there.) Further OEM2 there has a description of "INTEL CPU HWP", while OEM4 has "INTEL CPU CST". Pretty clearly all three need exposing for cpufreq and cpuidle to work. Fixes: 8b1a5268daf0 ("pvh/dom0: whitelist PVH Dom0 ACPI tables") Signed-off-by: Jan Beulich Reviewed-by: Roger Pau Monné --- Sadly the commit above says nothing at all about the criteria used by which tables would want to be whitelisted. Further tables on said system which weren't blacklisted prior to that commit, yet which also aren't whitelisted are DBGP, DBG2, FIDT, LPIT, MIGT, MSCT, NITR, PCCT, RASF, SVOS, UEFI, WDDT, and WSMT. Even without diving into the details of any of them it seems pretty clear to me that at least some would want whitelisting, too. --- a/xen/arch/x86/hvm/dom0_build.c +++ b/xen/arch/x86/hvm/dom0_build.c @@ -1010,12 +1010,20 @@ static bool __init pvh_acpi_table_allowe return true; else { + skip: printk("Skipping table %.4s in non-ACPI non-reserved region\n", sig); return false; } } + if ( !strncmp(sig, "OEM", 3) ) + { + if ( acpi_memory_banned(address, size) ) + goto skip; + return true; + } + return false; }