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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 7 Apr 2008 08:27:55 +0200 (CEST) From: Thomas Gleixner <tglx@...utronix.de> To: Roman Zippel <zippel@...ux-m68k.org> cc: john stultz <johnstul@...ibm.com>, Paul Mackerras <paulus@...ba.org>, Tony Luck <tony.luck@...el.com>, Ingo Molnar <mingo@...e.hu>, lkml <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] Close small window for vsyscall time inconsistencies On Mon, 7 Apr 2008, Roman Zippel wrote: > Hi, > > On Friday 4. April 2008, john stultz wrote: > > > So Thomas and Ingo pointed out to me that they were occasionally seeing > > small 1ns inconsistencies from clock_gettime() (and more rarely, 1us > > inconsistencies from gettimeofday() when the 1ns inconsistency occurred > > on a us boundary) > > What does inconsistency mean? Time is going backwards by 1us/1nsec. > So instead of shooting in the dark, I'd suggest to collect some > numbers first, That's what we did and John's analysis of the problem is pretty correct. Thanks, tglx -- 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/
Powered by blists - more mailing lists