linux-kernel - Re: [PATCH v14 23/32] fs/resctrl: Add definitions for MBM event configuration

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <689867b7-f3cc-4389-898c-53c4dc321447@intel.com>
Date: Mon, 30 Jun 2025 14:58:11 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: <babu.moger@....com>, <corbet@....net>, <tony.luck@...el.com>,
	<Dave.Martin@....com>, <james.morse@....com>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>
CC: <x86@...nel.org>, <hpa@...or.com>, <akpm@...ux-foundation.org>,
	<rostedt@...dmis.org>, <paulmck@...nel.org>, <thuth@...hat.com>,
	<ardb@...nel.org>, <gregkh@...uxfoundation.org>, <seanjc@...gle.com>,
	<thomas.lendacky@....com>, <pawan.kumar.gupta@...ux.intel.com>,
	<manali.shukla@....com>, <perry.yuan@....com>, <kai.huang@...el.com>,
	<peterz@...radead.org>, <xiaoyao.li@...el.com>, <kan.liang@...ux.intel.com>,
	<mario.limonciello@....com>, <xin3.li@...el.com>, <gautham.shenoy@....com>,
	<xin@...or.com>, <chang.seok.bae@...el.com>, <fenghuay@...dia.com>,
	<peternewman@...gle.com>, <maciej.wieczor-retman@...el.com>,
	<eranian@...gle.com>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v14 23/32] fs/resctrl: Add definitions for MBM event
 configuration

Hi Babu,

On 6/30/25 10:20 AM, Moger, Babu wrote:
> On 6/24/25 23:32, Reinette Chatre wrote:
>> On 6/13/25 2:05 PM, Babu Moger wrote:
> 
> Changed the whole changelog.
> 
> fs/resctrl: Add definitions for MBM event configuration
> 
> The "mbm_event" counter assignment mode allows the user to assign a
> hardware counter to an RMID, event pair and monitor the bandwidth as long
> as it is assigned. The user can specify a particular type of memory
> transaction for the counter to track.

Since an event can be configured with multiple memory transactions I think the
last sentence can be something like:
	The user can specify the memory transaction(s) for the counter to
	track.

> 
> Add the definitions for supported memory transactions (e.g., read, write,
> etc.) the counter can be configured with.

Looks good. Thank you.

Reinette