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: Wed, 16 Dec 2020 18:22:36 -0800 From: Richard Cochran <richardcochran@...il.com> To: Jakub Kicinski <kuba@...nel.org> Cc: Holger Assmann <h.assmann@...gutronix.de>, Giuseppe Cavallaro <peppe.cavallaro@...com>, Alexandre Torgue <alexandre.torgue@...com>, Jose Abreu <joabreu@...opsys.com>, "David S. Miller" <davem@...emloft.net>, Maxime Coquelin <mcoquelin.stm32@...il.com>, Rayagond Kokatanur <rayagond@...avyalabs.com>, kernel@...gutronix.de, Michael Olbrich <m.olbrich@...gutronix.de>, Ahmad Fatoum <a.fatoum@...gutronix.de>, Jose Abreu <Jose.Abreu@...opsys.com>, netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/2] net: stmmac: retain PTP-clock at hwtstamp_set On Wed, Dec 16, 2020 at 05:13:34PM -0800, Jakub Kicinski wrote: > On Wed, 16 Dec 2020 12:32:38 +0100 Holger Assmann wrote: > > As it is, valid SIOCSHWTSTAMP ioctl calls - i.e. enable/disable time > > stamping or changing filter settings - lead to synchronization of the > > NIC's hardware clock with CLOCK_REALTIME. This might be necessary > > during system initialization, but at runtime, when the PTP clock has > > already been synchronized to a grand master, a reset of the timestamp > > settings might result in a clock jump. +1 for keeping the PHC time continuous. > Please remember to CC Richard, the PTP maintainer. +1 to that, too! Thanks, Richard
Powered by blists - more mailing lists