linux-kernel - Re: [PATCH] x86/resctrl: Don't try to free nonexistent RMIDs

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Message-ID: <f30c9a16-27b5-44ab-a55d-b2f9f3e4258e@intel.com>
Date: Tue, 18 Jun 2024 10:08:47 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Dave Martin <Dave.Martin@....com>
CC: <x86@...nel.org>, <linux-kernel@...r.kernel.org>, James Morse
	<james.morse@....com>, Fenghua Yu <fenghua.yu@...el.com>, Thomas Gleixner
	<tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov
	<bp@...en8.de>, H Peter Anvin <hpa@...or.com>, Babu Moger
	<Babu.Moger@....com>, <shameerali.kolothum.thodi@...wei.com>, "D Scott
 Phillips OS" <scott@...amperecomputing.com>, <carl@...amperecomputing.com>,
	<lcherian@...vell.com>, <bobo.shaobowang@...wei.com>, "Shaopeng Tan
 (Fujitsu)" <tan.shaopeng@...itsu.com>, <baolin.wang@...ux.alibaba.com>, Jamie
 Iles <quic_jiles@...cinc.com>, Xin Hao <xhao@...ux.alibaba.com>, Peter Newman
	<peternewman@...gle.com>, <dfustini@...libre.com>, <amitsinght@...vell.com>,
	David Hildenbrand <david@...hat.com>, Rex Nie <rex.nie@...uarmicro.com>
Subject: Re: [PATCH] x86/resctrl: Don't try to free nonexistent RMIDs

Hi Dave,

On 6/18/24 9:16 AM, Dave Martin wrote:

> 
> Either way, I don't think this impacts the tested-ness of this patch,
> but please shout if you have concerns.
> 

I agree. The submission stated that it was tested on x86
"for the monitors-present case". When booting with
"rdt=!cmt,!mbmtotal,!mbmlocal" (as I did in my test) resctrl
is not able to discover monitoring support and it
thus tested the "monitors _not_ present case".

Reinette