From: Ben Horgan <ben.horgan@arm.com>
To: Reinette Chatre <reinette.chatre@intel.com>,
linux-kernel@vger.kernel.org
Cc: tony.luck@intel.com, Dave.Martin@arm.com, james.morse@arm.com,
babu.moger@amd.com, tglx@kernel.org, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, fenghuay@nvidia.com, tan.shaopeng@fujitsu.com
Subject: Re: [PATCH v5 3/7] fs/resctrl: Disallow the software controller when MBM counters are assignable
Date: Tue, 5 May 2026 16:51:40 +0100 [thread overview]
Message-ID: <d3d8444b-88ce-48a5-8260-3a2f17616f10@arm.com> (raw)
In-Reply-To: <20af6ebf-0960-4918-ad05-a6385edb8fd6@intel.com>
Hi Reinette,
On 5/5/26 16:21, Reinette Chatre wrote:
> Hi Ben,
>
> On 5/5/26 3:20 AM, Ben Horgan wrote:
>>
>> /*
>> * The MBA software controller is supported only if MBM is supported and MBA is
>> * in linear scale, and the MBM monitor scope is the same as MBA control scope.
>> *
>> * The software controller cannot be supported when the MBM counters are
>> * assignable. There is no guarantee that MBM counters are assigned to the
>> * event backing the software controller in all monitoring domains of all
>> * monitoring groups.
>> */
>>
>
> Thank you very much. For this patch with above added:
>
> | Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Thanks for all the reviews. I'll send out a v6 today.
Ben
>
> Reinette
next prev parent reply other threads:[~2026-05-05 15:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 13:04 [PATCH v5 0/7] x86,fs/resctrl: Pave the way for MPAM counter assignment Ben Horgan
2026-04-28 13:04 ` [PATCH v5 1/7] fs/resctrl: Tidy up the error path in resctrl_mkdir_event_configs() Ben Horgan
2026-05-04 15:59 ` Reinette Chatre
2026-04-28 13:04 ` [PATCH v5 2/7] x86,fs/resctrl: Create 'event_filter' files read only if they're not configurable Ben Horgan
2026-05-04 15:59 ` Reinette Chatre
2026-04-28 13:04 ` [PATCH v5 3/7] fs/resctrl: Disallow the software controller when MBM counters are assignable Ben Horgan
2026-05-04 16:01 ` Reinette Chatre
2026-05-05 9:34 ` Ben Horgan
2026-05-05 10:20 ` Ben Horgan
2026-05-05 15:21 ` Reinette Chatre
2026-05-05 15:51 ` Ben Horgan [this message]
2026-04-28 13:04 ` [PATCH v5 4/7] fs/resctrl: Add monitor property 'mbm_cntr_assign_fixed' Ben Horgan
2026-05-04 16:01 ` Reinette Chatre
2026-04-28 13:04 ` [PATCH v5 5/7] fs/resctrl: Continue counter allocation after failure Ben Horgan
2026-05-04 16:01 ` Reinette Chatre
2026-04-28 13:04 ` [PATCH v5 6/7] fs/resctrl: Document that automatic counter assignment is best effort Ben Horgan
2026-05-04 16:01 ` Reinette Chatre
2026-04-28 13:04 ` [PATCH v5 7/7] fs/resctrl: Document tasks file behaviour for task id 0 and idle tasks Ben Horgan
2026-05-04 16:02 ` Reinette Chatre
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