linux-kernel - Re: [PATCH v9 23/26] x86/resctrl: Configure mbm_cntr

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Message-ID: <a1feb895-a28c-46f9-a5fc-5152df8f3b51@amd.com>
Date: Wed, 20 Nov 2024 12:59:26 -0600
From: "Moger, Babu" <babu.moger@....com>
To: Reinette Chatre <reinette.chatre@...el.com>, corbet@....net,
 tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
 dave.hansen@...ux.intel.com
Cc: fenghua.yu@...el.com, x86@...nel.org, hpa@...or.com, thuth@...hat.com,
 paulmck@...nel.org, rostedt@...dmis.org, akpm@...ux-foundation.org,
 xiongwei.song@...driver.com, pawan.kumar.gupta@...ux.intel.com,
 daniel.sneddon@...ux.intel.com, perry.yuan@....com, sandipan.das@....com,
 kai.huang@...el.com, xiaoyao.li@...el.com, seanjc@...gle.com,
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 james.morse@....com, tan.shaopeng@...itsu.com, tony.luck@...el.com,
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 maciej.wieczor-retman@...el.com, eranian@...gle.com, jpoimboe@...nel.org,
 thomas.lendacky@....com
Subject: Re: [PATCH v9 23/26] x86/resctrl: Configure mbm_cntr_assign mode if
 supported

Hi Reinette,

On 11/18/24 13:23, Reinette Chatre wrote:
> Hi Babu,
> 
> On 10/29/24 4:21 PM, Babu Moger wrote:
>> Configure mbm_cntr_assign on AMD. 'mbm_cntr_assign' mode in AMD is ABMC
>> (Assignable Bandwidth Monitoring Counters). It is enabled by default when
>> supported on the system.
>>
>> When the ABMC is updated, it must be updated on all the logical processors
>> in the resctrl domain.
> 
> This needs imperative tone.
> 

Ensure that the ABMC is updated on all logical processors in the resctrl
domain.

-- 
Thanks
Babu Moger