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From: Drew Fustini <fustini@kernel.org>
To: Babu Moger <babu.moger@amd.com>
Cc: corbet@lwn.net, tony.luck@intel.com, reinette.chatre@intel.com,
	Dave.Martin@arm.com, james.morse@arm.com, tglx@linutronix.de,
	mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
	x86@kernel.org, hpa@zytor.com, kas@kernel.org,
	rick.p.edgecombe@intel.com, akpm@linux-foundation.org,
	paulmck@kernel.org, frederic@kernel.org, pmladek@suse.com,
	rostedt@goodmis.org, kees@kernel.org, arnd@arndb.de,
	fvdl@google.com, seanjc@google.com, thomas.lendacky@amd.com,
	pawan.kumar.gupta@linux.intel.com, perry.yuan@amd.com,
	manali.shukla@amd.com, sohil.mehta@intel.com, xin@zytor.com,
	Neeraj.Upadhyay@amd.com, peterz@infradead.org,
	tiala@microsoft.com, mario.limonciello@amd.com,
	dapeng1.mi@linux.intel.com, michael.roth@amd.com,
	chang.seok.bae@intel.com, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
	kvm@vger.kernel.org, peternewman@google.com, eranian@google.com,
	gautham.shenoy@amd.com
Subject: Re: [PATCH v18 00/33] x86,fs/resctrl: Support AMD Assignable Bandwidth Monitoring Counters (ABMC)
Date: Sun, 16 Nov 2025 09:25:21 -0800	[thread overview]
Message-ID: <aRoJAbfn+oBkc/sb@x1> (raw)
In-Reply-To: <cover.1757108044.git.babu.moger@amd.com>

On Fri, Sep 05, 2025 at 04:33:59PM -0500, Babu Moger wrote:
> 
> This series adds the support for Assignable Bandwidth Monitoring Counters
> (ABMC). It is also called QoS RMID Pinning feature.
> 
> Series is written such that it is easier to support other assignable
> features supported from different vendors.

Is there a way to find out which EPYC parts support ABMC?

I'm rebasing the RISC-V resctrl support on 6.18 and I noticed there are
a lot of changes to how events work. I've been reading the ABMC code
but I would like to get a better feel for how it works.

I found an EPYC 9124P on Cherry Servers which I was able to experiment
with using resctrl on x86. It has the following in cpuinfo:

cat_l3 cdp_l3 cqm cqm_llc cqm_mbm_local cqm_mbm_total cqm_occup_llc mba

It also has SMBA and BMEC based on the contents of /sys/fs/resctrl.

Ideally, I'd like to find a bare metal EPYC server that has ABMC, too.

Thanks,
Drew

  parent reply	other threads:[~2025-11-16 17:25 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-05 21:33 [PATCH v18 00/33] x86,fs/resctrl: Support AMD Assignable Bandwidth Monitoring Counters (ABMC) Babu Moger
2025-09-05 21:34 ` [PATCH v18 01/33] x86,fs/resctrl: Consolidate monitor event descriptions Babu Moger
2025-09-05 21:34 ` [PATCH v18 02/33] x86,fs/resctrl: Replace architecture event enabled checks Babu Moger
2025-09-05 21:34 ` [PATCH v18 03/33] x86/resctrl: Remove 'rdt_mon_features' global variable Babu Moger
2025-09-05 21:34 ` [PATCH v18 04/33] x86,fs/resctrl: Prepare for more monitor events Babu Moger
2025-09-05 21:34 ` [PATCH v18 05/33] x86/cpufeatures: Add support for Assignable Bandwidth Monitoring Counters (ABMC) Babu Moger
2025-09-06  4:49   ` Reinette Chatre
2025-09-08 14:41     ` Moger, Babu
2025-09-08 15:03       ` Borislav Petkov
2025-09-08 18:26         ` Moger, Babu
2025-09-05 21:34 ` [PATCH v18 06/33] x86/resctrl: Add ABMC feature in the command line options Babu Moger
2025-09-05 21:34 ` [PATCH v18 07/33] x86,fs/resctrl: Consolidate monitoring related data from rdt_resource Babu Moger
2025-09-05 21:34 ` [PATCH v18 08/33] x86,fs/resctrl: Detect Assignable Bandwidth Monitoring feature details Babu Moger
2025-09-05 21:34 ` [PATCH v18 09/33] x86/resctrl: Add support to enable/disable AMD ABMC feature Babu Moger
2025-09-05 21:34 ` [PATCH v18 10/33] fs/resctrl: Introduce the interface to display monitoring modes Babu Moger
2025-09-05 21:34 ` [PATCH v18 11/33] fs/resctrl: Add resctrl file to display number of assignable counters Babu Moger
2025-09-05 21:34 ` [PATCH v18 12/33] fs/resctrl: Introduce mbm_cntr_cfg to track assignable counters per domain Babu Moger
2025-09-05 21:34 ` [PATCH v18 13/33] fs/resctrl: Introduce interface to display number of free MBM counters Babu Moger
2025-09-05 21:34 ` [PATCH v18 14/33] x86/resctrl: Add data structures and definitions for ABMC assignment Babu Moger
2025-09-10 17:26   ` Borislav Petkov
2025-09-10 19:49     ` Moger, Babu
2025-09-10 19:59       ` Borislav Petkov
2025-09-10 20:26         ` Moger, Babu
2025-09-05 21:34 ` [PATCH v18 15/33] fs/resctrl: Introduce event configuration field in struct mon_evt Babu Moger
2025-09-05 21:34 ` [PATCH v18 16/33] x86,fs/resctrl: Implement resctrl_arch_config_cntr() to assign a counter with ABMC Babu Moger
2025-09-05 21:34 ` [PATCH v18 17/33] fs/resctrl: Add the functionality to assign MBM events Babu Moger
2025-09-05 21:34 ` [PATCH v18 18/33] fs/resctrl: Add the functionality to unassign " Babu Moger
2025-09-05 21:34 ` [PATCH v18 19/33] fs/resctrl: Pass struct rdtgroup instead of individual members Babu Moger
2025-09-05 21:34 ` [PATCH v18 20/33] fs/resctrl: Introduce counter ID read, reset calls in mbm_event mode Babu Moger
2025-09-05 21:34 ` [PATCH v18 21/33] x86/resctrl: Refactor resctrl_arch_rmid_read() Babu Moger
2025-09-05 21:34 ` [PATCH v18 22/33] x86/resctrl: Implement resctrl_arch_reset_cntr() and resctrl_arch_cntr_read() Babu Moger
2025-09-05 21:34 ` [PATCH v18 23/33] fs/resctrl: Support counter read/reset with mbm_event assignment mode Babu Moger
2025-09-05 21:34 ` [PATCH v18 24/33] fs/resctrl: Add event configuration directory under info/L3_MON/ Babu Moger
2025-09-05 21:34 ` [PATCH v18 25/33] fs/resctrl: Provide interface to update the event configurations Babu Moger
2025-09-06  4:49   ` Reinette Chatre
2025-09-05 21:34 ` [PATCH v18 26/33] fs/resctrl: Introduce mbm_assign_on_mkdir to enable assignments on mkdir Babu Moger
2025-09-11 15:08   ` Borislav Petkov
2025-09-11 16:24     ` Reinette Chatre
2025-09-11 16:54       ` Borislav Petkov
2025-09-11 17:11         ` Reinette Chatre
2025-09-11 16:28     ` Moger, Babu
2025-09-05 21:34 ` [PATCH v18 27/33] fs/resctrl: Auto assign counters on mkdir and clean up on group removal Babu Moger
2025-09-05 21:34 ` [PATCH v18 28/33] fs/resctrl: Introduce mbm_L3_assignments to list assignments in a group Babu Moger
2025-09-06  4:49   ` Reinette Chatre
2025-09-05 21:34 ` [PATCH v18 29/33] fs/resctrl: Introduce the interface to modify " Babu Moger
2025-09-06  4:50   ` Reinette Chatre
2025-09-08 19:17     ` Moger, Babu
2025-09-05 21:34 ` [PATCH v18 30/33] fs/resctrl: Disable BMEC event configuration when mbm_event mode is enabled Babu Moger
2025-09-05 21:34 ` [PATCH v18 31/33] fs/resctrl: Introduce the interface to switch between monitor modes Babu Moger
2025-09-05 21:34 ` [PATCH v18 32/33] x86/resctrl: Configure mbm_event mode if supported Babu Moger
2025-09-05 21:34 ` [PATCH v18 33/33] MAINTAINERS: resctrl: add myself as reviewer Babu Moger
2025-09-09 16:03 ` [PATCH v18 00/33] x86,fs/resctrl: Support AMD Assignable Bandwidth Monitoring Counters (ABMC) Reinette Chatre
2025-09-09 16:19   ` Borislav Petkov
2025-09-09 16:24     ` Reinette Chatre
2025-09-09 17:33       ` Luck, Tony
2025-09-09 17:38         ` Borislav Petkov
2025-09-15 11:25 ` Borislav Petkov
2025-09-15 21:07   ` Reinette Chatre
2025-09-16 10:54     ` Borislav Petkov
2025-09-16 17:00     ` Moger, Babu
2025-11-16 17:25 ` Drew Fustini [this message]
2025-11-17 15:07   ` Babu Moger
2025-11-18 23:15     ` Drew Fustini

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