From: "Luck, Tony" <tony.luck@intel.com>
To: Reinette Chatre <reinette.chatre@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 09:12:04 -0700 [thread overview]
Message-ID: <asfA1E-lBs5aRItb@agluck-desk3> (raw)
In-Reply-To: <cover.1791406459.git.reinette.chatre@intel.com>
> 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>
-Tony
next prev parent reply other threads:[~2026-10-08 16:12 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 ` Luck, Tony [this message]
2026-10-08 22:48 ` [PATCH v2 0/5] x86,fs/resctrl: Cleanups in preparation for multiple controls support Reinette Chatre
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