From: Reinette Chatre <reinette.chatre@intel.com>
To: Babu Moger <babu.moger@amd.com>, <corbet@lwn.net>,
<tony.luck@intel.com>, <Dave.Martin@arm.com>,
<james.morse@arm.com>, <tglx@linutronix.de>, <mingo@redhat.com>,
<bp@alien8.de>, <dave.hansen@linux.intel.com>
Cc: <x86@kernel.org>, <hpa@zytor.com>, <akpm@linux-foundation.org>,
<paulmck@kernel.org>, <rostedt@goodmis.org>,
<Neeraj.Upadhyay@amd.com>, <david@redhat.com>, <arnd@arndb.de>,
<fvdl@google.com>, <seanjc@google.com>, <thomas.lendacky@amd.com>,
<pawan.kumar.gupta@linux.intel.com>, <yosry.ahmed@linux.dev>,
<sohil.mehta@intel.com>, <xin@zytor.com>, <kai.huang@intel.com>,
<xiaoyao.li@intel.com>, <peterz@infradead.org>, <me@mixaill.net>,
<mario.limonciello@amd.com>, <xin3.li@intel.com>,
<ebiggers@google.com>, <ak@linux.intel.com>,
<chang.seok.bae@intel.com>, <andrew.cooper3@citrix.com>,
<perry.yuan@amd.com>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v7 03/10] x86,fs/resctrl: Detect io_alloc feature
Date: Mon, 21 Jul 2025 16:29:28 -0700 [thread overview]
Message-ID: <d66b3b66-82fb-49a9-930f-b933024c7fe1@intel.com> (raw)
In-Reply-To: <998f42d5c92cce9d7d83bcd54d25761242839b4a.1752167718.git.babu.moger@amd.com>
Hi Babu,
On 7/10/25 10:16 AM, Babu Moger wrote:
> Smart Data Cache Injection (SDCI) is a mechanism that enables direct
> insertion of data from I/O devices into the L3 cache. It can reduce the
> demands on DRAM bandwidth and reduces latency to the processor consuming
> the I/O data.
>
> Introduce cache resource property "io_alloc_capable" that an architecture
> can set if a portion of the cache can be allocated for I/O traffic.
>
> Set this property on x86 systems that support SDCIAE (L3 Smart Data Cache
> Injection Allocation Enforcement). This property is set only for the L3
> cache resource on systems that support SDCIAE.
>
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
next prev parent reply other threads:[~2025-07-21 23:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-10 17:16 [PATCH v7 00/10] x86,fs/resctrl: Support L3 Smart Data Cache Injection Allocation Enforcement (SDCIAE) Babu Moger
2025-07-10 17:16 ` [PATCH v7 01/10] x86/cpufeatures: Add support for L3 Smart Data Cache Injection Allocation Enforcement Babu Moger
2025-07-10 23:26 ` Borislav Petkov
2025-07-21 23:28 ` Reinette Chatre
2025-07-10 17:16 ` [PATCH v7 02/10] x86/resctrl: Add SDCIAE feature in the command line options Babu Moger
2025-07-21 23:29 ` Reinette Chatre
2025-07-31 16:28 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 03/10] x86,fs/resctrl: Detect io_alloc feature Babu Moger
2025-07-21 23:29 ` Reinette Chatre [this message]
2025-07-10 17:16 ` [PATCH v7 04/10] x86,fs/resctrl: Implement "io_alloc" enable/disable handlers Babu Moger
2025-07-21 23:32 ` Reinette Chatre
2025-07-31 17:40 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 05/10] fs/resctrl: Update bit_usage to reflect io_alloc Babu Moger
2025-07-21 23:35 ` Reinette Chatre
2025-08-04 21:20 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 06/10] fs/resctrl: Introduce interface to display "io_alloc" support Babu Moger
2025-07-21 23:36 ` Reinette Chatre
2025-07-31 18:51 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 07/10] fs/resctrl: Add user interface to enable/disable io_alloc feature Babu Moger
2025-07-21 23:40 ` Reinette Chatre
2025-07-31 22:52 ` Moger, Babu
2025-08-04 16:07 ` Reinette Chatre
2025-08-04 17:14 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 08/10] fs/resctrl: Introduce interface to display io_alloc CBMs Babu Moger
2025-07-21 23:42 ` Reinette Chatre
2025-08-04 18:14 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 09/10] fs/resctrl: Modify rdt_parse_data to pass mode and CLOSID Babu Moger
2025-07-22 3:30 ` Reinette Chatre
2025-08-04 19:32 ` Moger, Babu
2025-07-10 17:16 ` [PATCH v7 10/10] fs/resctrl: Introduce interface to modify io_alloc Capacity Bit Masks Babu Moger
2025-07-22 3:32 ` Reinette Chatre
2025-08-04 21:01 ` Moger, Babu
2025-07-21 23:28 ` [PATCH v7 00/10] x86,fs/resctrl: Support L3 Smart Data Cache Injection Allocation Enforcement (SDCIAE) Reinette Chatre
2025-08-04 21:34 ` Moger, Babu
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