linux-kernel - Re: [PATCH] x86: limit mwait

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: <200704051624.45747.ak@suse.de>
Date:	Thu, 5 Apr 2007 16:24:45 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Andreas Herrmann" <andreas.herrmann3@....com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: limit mwait_idle to Intel CPUs

On Thursday 05 April 2007 16:00:45 Andreas Herrmann wrote:
> 
> Commit 991528d7348667924176f3e29addea0675298944
> introduced mwait_idle which is supposed to work
> for Intel CPUs starting with Core Duo.
> 
> AMD Fam10 processors won't enter C1 on mwait.

Unfortunate. Will this be fixed?

> This patch will enable default_idle for non-Intel
> CPUs even if mwait is supported.

It would be better to clear MONITOR/MWAIT in the AMD specific
CPU initialize code than add workarounds everywhere else.

-Andi
-
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/