linux-kernel - Re: [PATCH 3/7] x86/resctrl: Introduce sdciae_capable in rdt

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b96e5de8-75ce-4a7a-8788-f5d3a959d771@amd.com>
Date: Wed, 18 Sep 2024 10:27:38 -0500
From: "Moger, Babu" <babu.moger@....com>
To: Reinette Chatre <reinette.chatre@...el.com>, corbet@....net,
 tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
 dave.hansen@...ux.intel.com, x86@...nel.org
Cc: fenghua.yu@...el.com, hpa@...or.com, paulmck@...nel.org,
 thuth@...hat.com, xiongwei.song@...driver.com, ardb@...nel.org,
 pawan.kumar.gupta@...ux.intel.com, daniel.sneddon@...ux.intel.com,
 sandipan.das@....com, kai.huang@...el.com, peterz@...radead.org,
 kan.liang@...ux.intel.com, pbonzini@...hat.com, xin3.li@...el.com,
 ebiggers@...gle.com, alexandre.chartre@...cle.com, perry.yuan@....com,
 tan.shaopeng@...itsu.com, james.morse@....com, tony.luck@...el.com,
 maciej.wieczor-retman@...el.com, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, peternewman@...gle.com, eranian@...gle.com
Subject: Re: [PATCH 3/7] x86/resctrl: Introduce sdciae_capable in rdt_resource

Hi Reinette,

On 9/13/24 15:45, Reinette Chatre wrote:
> Hi Babu,
> 
> On 8/16/24 9:16 AM, Babu Moger wrote:
>> Detect SDCIAE`(L3 Smart Data Cache Injection Allocation Enforcement)
> 
> (stray ` char)

Sure.

> 
>> feature and initialize sdciae_capable.
> 
> (This is a repeat of the discussion we had surrounding the ABMC feature.)
> 
> By adding "sdciae_capable" to struct rdt_resource the "sdciae" feature
> becomes a resctrl fs feature. Any other architecture that has a "similar
> but perhaps not identical feature to AMD's SDCIAE" will be forced to also
> call it "sdciae" ... sdciae seems like a marketing name to me and resctrl
> needs something generic that could later be built on (if needed) by other
> architectures.

How about "cache_inject_capable" ?

This seems generic. I will change the description also.

-- 
Thanks
Babu Moger