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From: Reinette Chatre <reinette.chatre@intel.com>
To: Tony Luck <tony.luck@intel.com>, Fenghua Yu <fenghuay@nvidia.com>,
	"Maciej Wieczor-Retman" <maciej.wieczor-retman@intel.com>,
	Peter Newman <peternewman@google.com>,
	James Morse <james.morse@arm.com>,
	Babu Moger <babu.moger@amd.com>,
	Drew Fustini <dfustini@baylibre.com>,
	Dave Martin <Dave.Martin@arm.com>, Chen Yu <yu.c.chen@intel.com>,
	David E Box <david.e.box@intel.com>, <x86@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>,
	<linux-kernel@vger.kernel.org>, <patches@lists.linux.dev>
Subject: Re: [PATCH v11 21/23] x86/resctrl: Require 64-bit x86 for resctrl support
Date: Wed, 9 Sep 2026 21:09:42 -0700	[thread overview]
Message-ID: <707d2f93-67c1-47be-8309-a07628827062@intel.com> (raw)
In-Reply-To: <20260831174421.13921-22-tony.luck@intel.com>

Hi Tony,

On 8/31/26 10:44 AM, Tony Luck wrote:
> 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 in inline with Dave Hansen's proposal[1] for an addition to Linux
> documentation that details the state of 32-bit x86 support.
> 
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> Link: https://lore.kernel.org/all/c6ab0c24-8931-4f0d-9be6-23498ab4c38b@intel.com/ [1]

[1] -> "# [1]".
For reference, see "Link:" description in Documentation/process/maintainer-tip.rst

Reinette


  reply	other threads:[~2026-09-10  4:09 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-31 17:43 [PATCH v11 00/23] Allow AET to use PMT as loadable module Tony Luck
2026-08-31 17:43 ` [PATCH v11 01/23] x86/resctrl: Give better names to X86_FEATURE flags for monitoring Tony Luck
2026-09-10  3:48   ` Reinette Chatre
2026-09-11  0:06     ` Luck, Tony
2026-09-11 15:56       ` Reinette Chatre
2026-09-11 18:21         ` Luck, Tony
2026-09-11 22:51           ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 02/23] x86/resctrl: Check if monitoring features are enabled Tony Luck
2026-09-10  3:52   ` Reinette Chatre
2026-09-11 19:11     ` Luck, Tony
2026-09-11 23:08       ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 03/23] x86/resctrl: Enumerate monitor features in rdt_get_l3_mon_config() Tony Luck
2026-09-10  3:54   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 04/23] x86/resctrl: Apply Intel MBM quirk from rdt_get_l3_mon_config() Tony Luck
2026-09-10  3:55   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 05/23] x86/resctrl: Delete resctrl_cpu_detect() Tony Luck
2026-08-31 17:44 ` [PATCH v11 06/23] arm,x86,fs/resctrl: Replace architecture resctrl_arch_{alloc,mon}_capable() Tony Luck
2026-09-10  3:56   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 07/23] x86/resctrl: Add special case for Intel Haswell enumeration Tony Luck
2026-09-10  3:56   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 08/23] x86/resctrl: Delete rdt_alloc_capable and rdt_mon_capable Tony Luck
2026-09-10  3:57   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 09/23] fs/resctrl: Remove redundant calls to resctrl_mon_capable() Tony Luck
2026-09-10  3:57   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 10/23] x86/resctrl: Honor rdt=perf option to force enable AET perf events Tony Luck
2026-08-31 17:44 ` [PATCH v11 11/23] fs/resctrl: Add interface to disable a monitor event Tony Luck
2026-09-10  3:58   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 12/23] arm,x86,fs/resctrl: Handle change in number of RMIDs on each mount Tony Luck
2026-09-10  4:01   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 13/23] x86/resctrl: Handle systems when AET is the only resource Tony Luck
2026-09-10  4:04   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 14/23] x86/resctrl: Enforce system RMID limit on AET event groups Tony Luck
2026-09-10  4:05   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 15/23] x86/resctrl: Add PMT registration API for AET enumeration callbacks Tony Luck
2026-08-31 17:44 ` [PATCH v11 16/23] platform/x86/intel/pmt: Register enumeration functions with resctrl Tony Luck
2026-09-01 11:11   ` Ilpo Järvinen
2026-08-31 17:44 ` [PATCH v11 17/23] arm,x86/resctrl: Resolve INTEL_PMT_TELEMETRY symbols at runtime Tony Luck
2026-09-10  4:07   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 18/23] fs/resctrl: Call arch code for every mount Tony Luck
2026-09-10  4:07   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 19/23] x86/resctrl: Export interface to report telemetry unbind/remove Tony Luck
2026-09-10  4:08   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 20/23] platform/x86/intel/pmt: Inform resctrl when MMIO maps are being removed Tony Luck
2026-09-01 11:09   ` Ilpo Järvinen
2026-09-10  4:09   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 21/23] x86/resctrl: Require 64-bit x86 for resctrl support Tony Luck
2026-09-10  4:09   ` Reinette Chatre [this message]
2026-08-31 17:44 ` [PATCH v11 22/23] x86/resctrl: Simplify Kconfig options for resctrl Tony Luck
2026-09-10  4:09   ` Reinette Chatre
2026-08-31 17:44 ` [PATCH v11 23/23] x86/resctrl: Document telemetry mount timing caveat Tony Luck
2026-09-10  4:10   ` Reinette Chatre
2026-09-01 19:53 ` [PATCH v11 00/23] Allow AET to use PMT as loadable module Luck, Tony

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