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: Thu, 6 Mar 2014 11:53:19 -0500 From: Chris Metcalf <cmetcalf@...era.com> To: Henrik Austad <henrik@...tad.us> CC: LKML <linux-kernel@...r.kernel.org>, John Stultz <johnstul@...ibm.com>, Mike Galbraith <bitbucket@...ine.de>, Salman Qazi <sqazi@...gle.com> Subject: Re: [PATCH] tile: avoid overflow in ns2cycles On 3/4/2014 3:20 AM, Henrik Austad wrote: > In commit 4cecf6d401a ("sched, x86: Avoid unnecessary overflow in > sched_clock") and in recent patch "clocksource: avoid unnecessary > overflow in cyclecounter_cyc2ns()" https://lkml.org/lkml/2014/3/4/17, > the mult-shift approach is replaced by 2 steps to avoid storing a large, > intermediate value that could overflow. > > arch/tile/kernel/time.c has a similar pattern in cycles2ns, and this > copies the same pattern in this function > > CC: John Stultz <johnstul@...ibm.com> > CC: Mike Galbraith <bitbucket@...ine.de> > CC: Salman Qazi <sqazi@...gle.com> > Signed-off-by: Henrik Austad <henrik@...tad.us> > --- > arch/tile/kernel/time.c | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) Thanks; taken into the tile tree (with some minor whitespace formatting tweaks). -- Chris Metcalf, Tilera Corp. http://www.tilera.com -- 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