linux-kernel - Re: [PATCH v5 05/34] ACPI / PPTT: Add a helper to fill a cpumask from a cache

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: <20251118153335.000067ed@huawei.com>
Date: Tue, 18 Nov 2025 15:33:35 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Ben Horgan <ben.horgan@....com>
CC: <james.morse@....com>, <amitsinght@...vell.com>,
	<baisheng.gao@...soc.com>, <baolin.wang@...ux.alibaba.com>,
	<bobo.shaobowang@...wei.com>, <carl@...amperecomputing.com>,
	<catalin.marinas@....com>, <dakr@...nel.org>, <dave.martin@....com>,
	<david@...hat.com>, <dfustini@...libre.com>, <fenghuay@...dia.com>,
	<gregkh@...uxfoundation.org>, <gshan@...hat.com>, <guohanjun@...wei.com>,
	<jeremy.linton@....com>, <kobak@...dia.com>, <lcherian@...vell.com>,
	<lenb@...nel.org>, <linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<lpieralisi@...nel.org>, <peternewman@...gle.com>, <quic_jiles@...cinc.com>,
	<rafael@...nel.org>, <robh@...nel.org>, <rohit.mathew@....com>,
	<scott@...amperecomputing.com>, <sdonthineni@...dia.com>,
	<sudeep.holla@....com>, <tan.shaopeng@...itsu.com>, <will@...nel.org>,
	<xhao@...ux.alibaba.com>, "Zeng Heng" <zengheng4@...wei.com>, Shaopeng Tan
	<tan.shaopeng@...fujitsu.com>
Subject: Re: [PATCH v5 05/34] ACPI / PPTT: Add a helper to fill a cpumask
 from a cache_id

On Mon, 17 Nov 2025 16:59:44 +0000
Ben Horgan <ben.horgan@....com> wrote:

> From: James Morse <james.morse@....com>
> 
> MPAM identifies CPUs by the cache_id in the PPTT cache structure.
> 
> The driver needs to know which CPUs are associated with the cache.
> The CPUs may not all be online, so cacheinfo does not have the
> information.
> 
> Add a helper to pull this information out of the PPTT.
> 
> CC: Rohit Mathew <Rohit.Mathew@....com>
> Reviewed-by: Gavin Shan <gshan@...hat.com>
> Reviewed-by: Fenghua Yu <fenghuay@...dia.com>
> Tested-by: Fenghua Yu <fenghuay@...dia.com>
> Tested-by: Carl Worth <carl@...amperecomputing.com>
> Tested-by: Gavin Shan <gshan@...hat.com>
> Tested-by: Zeng Heng <zengheng4@...wei.com>
> Tested-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
> Signed-off-by: James Morse <james.morse@....com>
> Signed-off-by: Ben Horgan <ben.horgan@....com>

Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>