linux-kernel - Re: [RESEND PATCH v5 0/5] Make cpuid <-> nodeid mapping persistent

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]

Date:	Thu, 3 Mar 2016 03:08:46 +0100
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Zhu Guihua <zhugh.fnst@...fujitsu.com>
Cc:	cl@...ux.com, Tejun Heo <tj@...nel.org>, mika.j.penttila@...il.com,
	Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"H. Peter Anvin" <hpa@...or.com>, yasu.isimatu@...il.com,
	isimatu.yasuaki@...fujitsu.com, kamezawa.hiroyu@...fujitsu.com,
	izumi.taku@...fujitsu.com, gongzhaogang@...pur.com,
	Len Brown <len.brown@...el.com>, Len Brown <lenb@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, chen.tang@...ystack.cn,
	x86@...nel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [RESEND PATCH v5 0/5] Make cpuid <-> nodeid mapping persistent

Hi,

On Thu, Mar 3, 2016 at 2:42 AM, Zhu Guihua <zhugh.fnst@...fujitsu.com> wrote:
> [Problem]
>
> cpuid <-> nodeid mapping is firstly established at boot time. And workqueue caches
> the mapping in wq_numa_possible_cpumask in wq_numa_init() at boot time.
>
> When doing node online/offline, cpuid <-> nodeid mapping is established/destroyed,
> which means, cpuid <-> nodeid mapping will change if node hotplug happens. But
> workqueue does not update wq_numa_possible_cpumask.
>

Are there any changes in this version relative to the previous one?

Thanks,
Rafael