linux-kernel - Re: [PATCH v11 11/23] x86/resctrl: Introduce mbm_cntr_cfg to track assignable counters at domain

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: <2f1d5857-7f32-4bde-9b12-77fb2b4464da@intel.com>
Date: Mon, 10 Feb 2025 10:10:26 -0800
From: Reinette Chatre <reinette.chatre@...el.com>
To: "Moger, Babu" <bmoger@....com>, Babu Moger <babu.moger@....com>,
	<corbet@....net>, <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
	<dave.hansen@...ux.intel.com>, <tony.luck@...el.com>,
	<peternewman@...gle.com>
CC: <x86@...nel.org>, <hpa@...or.com>, <paulmck@...nel.org>,
	<akpm@...ux-foundation.org>, <thuth@...hat.com>, <rostedt@...dmis.org>,
	<xiongwei.song@...driver.com>, <pawan.kumar.gupta@...ux.intel.com>,
	<daniel.sneddon@...ux.intel.com>, <jpoimboe@...nel.org>,
	<perry.yuan@....com>, <sandipan.das@....com>, <kai.huang@...el.com>,
	<xiaoyao.li@...el.com>, <seanjc@...gle.com>, <xin3.li@...el.com>,
	<andrew.cooper3@...rix.com>, <ebiggers@...gle.com>,
	<mario.limonciello@....com>, <james.morse@....com>,
	<tan.shaopeng@...itsu.com>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <maciej.wieczor-retman@...el.com>,
	<eranian@...gle.com>
Subject: Re: [PATCH v11 11/23] x86/resctrl: Introduce mbm_cntr_cfg to track
 assignable counters at domain

Hi Babu,

On 2/7/25 10:23 AM, Moger, Babu wrote:
> On 2/5/2025 5:57 PM, Reinette Chatre wrote:
>> On 1/22/25 12:20 PM, Babu Moger wrote:
>>
>>> to a particular monitoring group. Check every entry of every hardware
>>> counter    configuration array in every monitoring domain to query which
>>
>> ... one more \t above
> 
> Sure
> 
>>
>>> MBM events of a monitoring group is tracked by hardware. Such queries
>>> are acceptable because of a very small number of assignable counters.
>>
>> It is not obvious what "very small number" means. Is it possible to give
>> a range to help reader understand the motivation?
> 
> How about?
> 
> MBM events of a monitoring group is tracked by hardware. Such queries
> are acceptable because of a very small number of assignable counters(32 to 64).

Yes, thank you. This helps to understand the claim.

Reinette