From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.12 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793873975; b=K0DaD6RrAV4pP8woM2QXMARr/6j/3s1yk4BsLqJNtXF+G1S38YyxZX39urmTucT+E3nW 44mRKTAnApJGnZd3igDV0xfy2xoz1zrQB7bdv4V4MjTxHV2o5UFkJW1LmCSKUZ3RrPw6r wRsrkyFboUYVeoMj8RIH6c/3leLAsZ06ofhc3zESXZsu5jTsfkYzGpgAKdQeBR9xHVaFX fA1CDiZJfxHHdmLXOPbagrEc4RIXz08vD2bhqKd5ODCqTcpb9O2zlR4piO5qB/nVKvTPF jeXoiniawU9mh32va/ylhq+172MmRuWEcLRJJxR8HPGZMAiXGxIw9V/+b54IpX8Unzw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793873975; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:From:To:Cc:Subject: Date:Message-Id:X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; bh=V1425VickH0U/cq3HA//BsimIL61YS+3s6S4I+LnDFY=; b=22rkAsFRjMvYXveog5nfBKFrpPsBYixWcMvVtPPPqoZEk3aH92f1Cs6r7znYfidxi51P NztfuH3fVYKIa3fcgKM5V2BrLg+bS8OcKnRI92UsjnRWBzx0fhAozhQy61hYvp5Xf5U+N 42NXsvEEdlJ9RrFjmRqTLEjXOhBghwwaX1b24LumECGZw6AFV6hZ6ArLTEuzTksbQ9Ftb H3qXZZL+9VwY/ELdjkQvg7knECuPvpsx73FwReNjNw8PpP3KPeWm5Td3eJduBSLjEN14p 8tiFPNEItxB5ZjcNsJCzO/i5ZBTo9zOoTLJ1ts4E/5beelLzSB0btlWju7VVJNFWL2w== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=NYhKMp79; arc=none smtp.remote-ip=192.198.163.12 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AB378606A330 for ; Thu, 5 Nov 2026 10:19:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org AB378606A330 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=NYhKMp79 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1793873972; x=1825409972; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Zj0zVNOu94ih07InFYHgHqA1Pz8gcacruHHQkFrLLpQ=; b=NYhKMp79rnjMBbIfRtXSmpVO1dkw4s0B/DDF7I7fVd1sh20rE1ssFhLM OLUWh1dg+byUPG8TmD/cNN7qRAaLHWqnu5kwwAf/r275j2PCDasgkVEfb zForqq62iCqE/wos4wFVxFI0I4fQwGJ7OxN/HPBeCA/GIjoVyvhUWKC9D XcuwcGnXvpr4UzkOvvszd7j/iuZC8+uFyEVqJ4ItRS5FxXDLXoNUyL8vU gMileqaMod6D6ecfsEk7d5TSOJq1saiMyU2Gfj5OgqaJLrSOPeEXjnYZf xSmGzqCeP7zJCDx7en+S8CL3uNDZNmQNF/+UJOUS1q8W7tYXqNe4Bpf1j g==; X-CSE-ConnectionGUID: x7A5H3FsT4KY11Vz/GI3Lg== X-CSE-MsgGUID: aSmbn6VlQMiZUESxI+6rPw== X-IronPort-AV: E=McAfee;i="6800,10657,11956"; a="2558379" X-IronPort-AV: E=Sophos;i="6.27,197,1787036400"; d="scan'208";a="2558379" Received: from fmviesa012.fm.intel.com ([10.60.135.152]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Nov 2026 02:19:32 -0800 X-CSE-ConnectionGUID: abrshWGPTYu/d9jzsvHs1g== X-CSE-MsgGUID: hmA+C8GUSKyTM8PuN9yZHQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,197,1787036400"; d="scan'208";a="8741743" Received: from chenyu-dev.sh.intel.com ([10.239.62.184]) by fmviesa012.fm.intel.com with ESMTP; 05 Nov 2026 02:19:29 -0800 From: Chen Yu To: tony.luck@intel.com, reinette.chatre@intel.com Cc: tglx@kernel.org, bp@alien8.de, mingo@redhat.com, dave.hansen@linux.intel.com, hpa@zytor.com, fenghuay@nvidia.com, babu.moger@amd.com, hongyu.ning@intel.com, chen.yu@linux.dev, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v10 03/12] x86/resctrl: Require 64-bit x86 for resctrl support Date: Thu, 5 Nov 2026 18:08:29 +0800 Message-Id: <39843a4166ca45ac777548eb70e777e2f23c949c.1793864720.git.yu.c.chen@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Tony Luck Intel Application Energy Telemetry (AET) provides event counts in 64-bit registers in MMIO space. For accurate results these should be read with a single 64-bit load operation from the CPU. In preparation for the removal of the separate CONFIG_X86_CPU_RESCTRL_INTEL_AET configuration option, move the X86_64 dependency to X86_CPU_RESCTRL. This is in line with Dave Hansen's proposal[1] for an addition to Linux documentation that details reduced 32-bit x86 support. Signed-off-by: Tony Luck Signed-off-by: Chen Yu Reviewed-by: Reinette Chatre Link: https://lore.kernel.org/all/c6ab0c24-8931-4f0d-9be6-23498ab4c38b@intel.com/ # [1] --- Changes since v9: - This patch is picked up from the AET series so that both series carry identical versions, which is why its changelog refers to AET rather than ERDT. (Reinette Chatre) - Add Reinette's Reviewed-by. arch/x86/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 58dce0b66179..4aff3c6cda0c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -515,7 +515,7 @@ config X86_MPPARSE config X86_CPU_RESCTRL bool "x86 CPU resource control support" - depends on X86 && (CPU_SUP_INTEL || CPU_SUP_AMD) + depends on X86_64 && (CPU_SUP_INTEL || CPU_SUP_AMD) depends on MISC_FILESYSTEMS select ARCH_HAS_CPU_RESCTRL select RESCTRL_FS @@ -538,7 +538,7 @@ config X86_CPU_RESCTRL config X86_CPU_RESCTRL_INTEL_AET bool "Intel Application Energy Telemetry" - depends on X86_64 && X86_CPU_RESCTRL && CPU_SUP_INTEL && INTEL_PMT_TELEMETRY=y && INTEL_TPMI=y + depends on X86_CPU_RESCTRL && CPU_SUP_INTEL && INTEL_PMT_TELEMETRY=y && INTEL_TPMI=y help Enable per-RMID telemetry events in resctrl. -- 2.25.1