linux-kernel - Re: [git pull?] clocksource: ACPI pmtmr bugfixes [Was: Re: ACPI PM-Timer on K6-3 SiS5591: Houston...]

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: <20080818200017.GA11247@rhlx01.hs-esslingen.de>
Date:	Mon, 18 Aug 2008 22:00:17 +0200
From:	Andreas Mohr <andi@...as.de>
To:	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	johnstul@...ibm.com, hirofumi@...l.parknet.co.jp,
	alan@...rguk.ukuu.org.uk, arjan@...radead.org, andi@...as.de
Subject: Re: [git pull?] clocksource: ACPI pmtmr bugfixes [Was: Re: ACPI
	PM-Timer on K6-3 SiS5591: Houston...]

Hi,

On Mon, Aug 18, 2008 at 09:35:17PM +0200, Dominik Brodowski wrote:
> Hi Andrew,
> 
> On Mon, Aug 18, 2008 at 12:19:24PM -0700, Andrew Morton wrote:
> > :     acpi_pm.c: check for monotonicity
> > :     
> > :     Expand the check for monotonicity by doing ten tests instead of one.
> > 
> > Why?
> 
> Indeed: http://lkml.org/lkml/2008/8/10/77 -- quote:
> "Result: catastrophic timer behaviour (a large backwards skip is possible),"
> 
> The current check for monotonicity is way too weak. And at least on one
> system out there PMTMR is unuseable, but the current check fails.

Just want to say thank you for promptly following up on this issue!

I wanted to test your 2nd patch (improved init), but was unable to do so
(currently too busy due to large changes, plus distance to production system,
downtime NOT appreciated ;).

Andreas Mohr
--
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/