From: Reinette Chatre <reinette.chatre@intel.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: <ben.horgan@arm.com>, <james.morse@arm.com>,
<Dave.Martin@arm.com>, <babu.moger@amd.com>, <bp@alien8.de>,
<tglx@linutronix.de>, <dave.hansen@linux.intel.com>,
<x86@kernel.org>, <hpa@zytor.com>, <fustini@kernel.org>,
<fenghuay@nvidia.com>, <peternewman@google.com>,
<yu.c.chen@intel.com>, <linux-kernel@vger.kernel.org>,
<patches@lists.linux.dev>
Subject: Re: [PATCH v2 0/5] x86,fs/resctrl: Cleanups in preparation for multiple controls support
Date: Thu, 8 Oct 2026 15:48:26 -0700 [thread overview]
Message-ID: <6e6194c1-099b-4c12-a597-0b9a457ac837@intel.com> (raw)
In-Reply-To: <asfA1E-lBs5aRItb@agluck-desk3>
On 10/8/26 9:12 AM, Luck, Tony wrote:
>> The only intended functional change is a reworded informational message
>> printed if an Intel system with non-linear MBA delay values is encountered.
>
> I set r->membw.delay_linear = false; and booted to check. Console
> message during boot now includes:
>
> [ 7.372455] resctrl: Non-linear MBA delay values not supported
>
> Attempting to mount resctrl with the mba_MBps option fails (as expected)
> with:
>
> mount: /sys/fs/resctrl: fsconfig system call failed: resctrl: mba_MBps requires MBM (mbm_event mode not supported) and linear scale MBA at L3 scope.
>
> I've been using the older versions of these patches from
>
> git://git.kernel.org/pub/scm/linux/kernel/git/reinette/linux.git resctrl/controls_rfc_v2.4
>
> and haven't seen any issues.
>
>
> Series:
>
> Reviewed-by: Tony Luck <tony.luck@intel.com>
Thank you very much Tony.
Reinette
prev parent reply other threads:[~2026-10-08 22:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 21:06 Reinette Chatre
2026-10-07 21:06 ` [PATCH v2 1/5] x86,fs/resctrl: Remove unused non-linear bandwidth delay mapping Reinette Chatre
2026-10-07 21:06 ` [PATCH v2 2/5] x86,fs/resctrl: Remove unnecessary non-linear MBA configuration check Reinette Chatre
2026-10-08 7:14 ` Chen Yu
2026-10-07 21:06 ` [PATCH v2 3/5] x86,fs/resctrl: Move MSR_IA32_L{2,3}_QOS_CFG scope property to x86 resource Reinette Chatre
2026-10-07 21:06 ` [PATCH v2 4/5] fs/resctrl: Drop unnecessary is_mba_linear() helper Reinette Chatre
2026-10-07 21:06 ` [PATCH v2 5/5] fs/resctrl: Drop unnecessary parameter from resctrl_io_alloc_parse_line() Reinette Chatre
2026-10-08 16:12 ` [PATCH v2 0/5] x86,fs/resctrl: Cleanups in preparation for multiple controls support Luck, Tony
2026-10-08 22:48 ` Reinette Chatre [this message]
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