From: Reinette Chatre <reinette.chatre@intel.com>
To: Babu Moger <babu.moger@amd.com>, <tony.luck@intel.com>,
<bp@alien8.de>, <ben.horgan@arm.com>
Cc: <corbet@lwn.net>, <skhan@linuxfoundation.org>,
<rdunlap@infradead.org>, <x86@kernel.org>, <Dave.Martin@arm.com>,
<james.morse@arm.com>, <tglx@kernel.org>, <mingo@redhat.com>,
<dave.hansen@linux.intel.com>, <hpa@zytor.com>,
<fenghuay@nvidia.com>, <kas@kernel.org>,
<rick.p.edgecombe@intel.com>, <akpm@linux-foundation.org>,
<rppt@kernel.org>, <dapeng1.mi@linux.intel.com>,
<elver@google.com>, <enelsonmoore@gmail.com>,
<jlayton@kernel.org>, <kuba@kernel.org>, <ebiggers@kernel.org>,
<seanjc@google.com>, <ewanhai-oc@zhaoxin.com>,
<binbin.wu@linux.intel.com>, <peterz@infradead.org>,
<ashish.kalra@amd.com>, <superm1@kernel.org>,
<chang.seok.bae@intel.com>, <prathyushi.nangia@amd.com>,
<kim.phillips@amd.com>, <ackerleytng@google.com>,
<elena.reshetova@intel.com>, <naveen@kernel.org>,
<darwi@linutronix.de>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-coco@lists.linux.dev>,
<kvm@vger.kernel.org>, <eranian@google.com>,
<peternewman@google.com>
Subject: Re: [PATCH v6 08/18] x86/resctrl: Register RESCTRL_GLOBAL_ENABLE_PER_CPU when PLZA is available
Date: Thu, 15 Oct 2026 07:46:15 -0700 [thread overview]
Message-ID: <b3f44e74-dbb6-428d-a746-618b7288df5c@intel.com> (raw)
In-Reply-To: <05717f15f11f9e11f6b2a2737f4ed2f01fd9733b.1790867441.git.babu.moger@amd.com>
Hi Babu,
On 10/1/26 8:10 AM, Babu Moger wrote:
> PLZA (Privilege Level Zero Association) provides the global per-CPU kernel
> mode, RESCTRL_GLOBAL_ENABLE_PER_CPU, allowing kernel work to use allocation
> and monitoring associations that differ from user tasks.
>
> Add x86 support for this kernel mode and make it available through the
nit: This patch does not add any support, it just registers the mode
with resctrl fs (as the subject already indicates). Didn't patch #5 already
claim to add support?
> resctrl kernel-mode infrastructure.
>
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---
Reinette
next prev parent reply other threads:[~2026-10-15 14:46 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 15:10 [PATCH v6 00/18] x86,fs/resctrl: Add kernel-mode (e.g., PLZA) support to the resctrl subsystem Babu Moger
2026-10-01 15:10 ` [PATCH v6 01/18] x86/cpufeatures: Support Privilege Level Zero Association (PLZA) Babu Moger
2026-10-15 14:16 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 02/18] x86/resctrl: Add PLZA support to command-line options Babu Moger
2026-10-15 14:17 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 03/18] x86/resctrl: Add PLZA configuration definitions and data structures Babu Moger
2026-10-15 14:22 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 04/18] fs/resctrl: Introduce kernel mode enum Babu Moger
2026-10-15 14:44 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 05/18] x86,arm,fs/resctrl: Introduce architecture hook to program global kernel mode Babu Moger
2026-10-15 14:30 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 06/18] fs/resctrl: Introduce kernel mode states for resctrl Babu Moger
2026-10-15 14:37 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 07/18] fs/resctrl: Introduce resctrl_set_kmode_support() to register supported modes Babu Moger
2026-10-15 14:40 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 08/18] x86/resctrl: Register RESCTRL_GLOBAL_ENABLE_PER_CPU when PLZA is available Babu Moger
2026-10-15 14:46 ` Reinette Chatre [this message]
2026-10-01 15:10 ` [PATCH v6 09/18] fs/resctrl: Add interface to display kernel mode status Babu Moger
2026-10-15 15:16 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 10/18] fs/resctrl: Add support for hidden resource group files Babu Moger
2026-10-15 15:27 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 11/18] fs/resctrl: Introduce kmode_cpus/kmode_cpus_list per rdtgroup Babu Moger
2026-10-15 15:31 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 12/18] fs/resctrl: Add CPU hotplug support for kernel mode associations Babu Moger
2026-10-15 15:33 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 13/18] fs/resctrl: Deactivate kernel mode associations when a group is removed Babu Moger
2026-10-15 15:43 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 14/18] fs/resctrl: Control visibility of global per-CPU kernel mode group files Babu Moger
2026-10-15 15:46 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 15/18] fs/resctrl: Reject mode changes for groups backing kernel mode Babu Moger
2026-10-15 15:49 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 16/18] fs/resctrl: Add interface to modify kernel mode via info/kernel_mode Babu Moger
2026-10-15 16:07 ` Reinette Chatre
2026-10-01 15:10 ` [PATCH v6 17/18] fs/resctrl: Allow user space to write kmode_cpus/kmode_cpus_list Babu Moger
2026-10-01 15:10 ` [PATCH v6 18/18] fs/resctrl: Add kernel mode documentation and examples Babu Moger
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