From: Reinette Chatre <reinette.chatre@intel.com>
To: Ben Horgan <ben.horgan@arm.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 08:21:47 -0700 [thread overview]
Message-ID: <20af6ebf-0960-4918-ad05-a6385edb8fd6@intel.com> (raw)
In-Reply-To: <50f80205-09a4-4883-aa44-35d41aa780fc@arm.com>
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>
Reinette
next prev parent reply other threads:[~2026-05-05 15:22 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 [this message]
2026-05-05 15:51 ` Ben Horgan
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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