linux-kernel - Re: [PATCH RFC] x86: hpet: Avoid the readback penalty

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:	Wed, 15 Sep 2010 09:54:59 -0400
From:	John Drescher <drescherjm@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Nix <nix@...eri.org.uk>,
	Artur Skawina <art.08.09@...il.com>,
	Damien Wyart <damien.wyart@...e.fr>,
	Venkatesh Pallipadi <venki@...gle.com>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Borislav Petkov <borislav.petkov@....com>,
	Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [PATCH RFC] x86: hpet: Avoid the readback penalty

On Wed, Sep 15, 2010 at 9:11 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
> On Tue, 14 Sep 2010, tip-bot for Thomas Gleixner wrote:
>> x86: hpet: Work around hardware stupidity
>
> After my brain recovered from yesterdays exposure with the x86 timer
> horror, I came up with a different solution for this problem, which
> avoids the readback of the compare register completely. It works
> nicely on my affected ATI system, but needs some exposure to the other
> machines.
>
> Comments ?
>

I can test this on my i7 machine in tonight (around 12 hours from now).

John
--
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/