linux-kernel - Re: [PATCH v14 32/32] x86/resctrl: Configure mbm

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Message-ID: <367717a1-97e4-48ff-81dc-d6db90129016@intel.com>
Date: Wed, 25 Jun 2025 16:40:28 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Babu Moger <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 32/32] x86/resctrl: Configure mbm_event mode if
 supported

Hi Babu,

On 6/13/25 2:05 PM, Babu Moger wrote:

> @@ -537,6 +540,10 @@ static void domain_add_cpu_mon(int cpu, struct rdt_resource *r)
>  	d->ci_id = ci->id;
>  	cpumask_set_cpu(cpu, &d->hdr.cpu_mask);
>  
> +	/* Update the mbm_mbm_assign state for the CPU if supported */

"mbm_mbm_assign" -> "mbm_assign_mode"?

> +	if (r->mon.mbm_cntr_assignable)
> +		resctrl_arch_mbm_cntr_assign_set_one(r);
> +
>  	arch_mon_domain_online(r, d);
>  
>  	if (arch_domain_mbm_alloc(r->mon.num_rmid, hw_dom)) {

Reinette