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  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:	Thu, 14 Aug 2014 10:10:36 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	"fugang.duan@...escale.com" <fugang.duan@...escale.com>
Cc:	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 1/1] net: fec: ptp: avoid register access when ipg
 clock is disabled

On Thu, Aug 14, 2014 at 01:28:28AM +0000, fugang.duan@...escale.com wrote:
> If the ethx close, ptp stack cannot run normally, stack stop send sync message with master,

But this has no effect on whether transmit time stamps are enabled.

The timer work must run whenever the (physical) clock is
running. Otherwise you will have discontinuities in your PTP clock.
The kernel must always behave correctly, regardless of what user space
does.

When the user calls clock_gettime(), the result must always be
consistent. This has nothing to do with time stamping at all.

Thanks,
Richard
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists