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Message-ID: <133a64f2-b509-4108-b3dc-9c58d140b25d@amd.com>
Date: Sat, 21 Dec 2024 08:33:57 -0600
From: "Moger, Babu" <bmoger@....com>
To: Reinette Chatre <reinette.chatre@...el.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: fenghua.yu@...el.com, 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 v10 21/24] x86/resctrl: Configure mbm_cntr_assign mode if
 supported

Hi Reinette,

On 12/19/2024 9:03 PM, Reinette Chatre wrote:
> Hi Babu,
> 
> On 12/12/24 12:15 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.
> 
> Needs imperative "Enable mbm_cntr_assign mode ..."

Sure.
> 
>>
>> Ensure that the ABMC is updated on all logical processors in the resctrl
>> domain.
> 
> Needs imperative (for example) "Update the assignable counter mode .."
> 

ok. Sure.

> 
> Please distinguish how it is the architecture that decides what the
> default mode should be. resctrl's part is to ensure that architecture
> gets opportunity to configure every logical processor as it comes online.
> 
Yes. Got.

thanks
Babu

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