linux-kernel - RE: [PATCH 2/2] x86/MCE: Add command line option to extend MCE Records pool

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: <SJ1PR11MB608354A42EBA295ED904A509FC482@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date: Mon, 12 Feb 2024 22:53:53 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: "paulmck@...nel.org" <paulmck@...nel.org>, Borislav Petkov <bp@...en8.de>
CC: Yazen Ghannam <yazen.ghannam@....com>, "Naik, Avadhut" <avadnaik@....com>,
	"Mehta, Sohil" <sohil.mehta@...el.com>, "x86@...nel.org" <x86@...nel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Avadhut Naik
	<avadhut.naik@....com>
Subject: RE: [PATCH 2/2] x86/MCE: Add command line option to extend MCE
 Records pool

> The usual reason is to exclude other CPUs also doing list_add_rcu()
> on the same list.  Or is there other synchronization that is preventing
> concurrent updates?

In this case the patch is trying to do a one-time bump of the pool size.
So no races here.

-Tony