linux-kernel - Re: [RFC][PATCH 09/11] sched, x86: Kill saved_preempt

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: <alpine.DEB.2.11.1509291517520.4500@nanos>
Date:	Tue, 29 Sep 2015 15:18:02 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Peter Zijlstra <peterz@...radead.org>
cc:	mingo@...nel.org, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, fweisbec@...il.com, oleg@...hat.com,
	umgwanakikbuti@...il.com, rostedt@...dmis.org
Subject: Re: [RFC][PATCH 09/11] sched, x86: Kill saved_preempt_count

On Tue, 29 Sep 2015, Peter Zijlstra wrote:

> With the introduction of the context switch preempt_count invariant,
> and the demise of PREEMPT_ACTIVE, its pointless to save/restore the
> per-cpu preemption count, it must always be 2.

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/