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From: Joe Perches <joe@perches.com>
To: Haiyang Zhang <haiyangz@microsoft.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devel@driverdev.osuosl.org" <devel@driverdev.osuosl.org>,
	"virtualization@lists.osdl.org" <virtualization@lists.osdl.org>,
	"gregkh@suse.de" <gregkh@suse.de>,
	Hank Janssen <hjanssen@microsoft.com>
Subject: RE: [PATCH 1/1] staging: hv: Add Time Sync feature to hv_utils module
Date: Wed, 05 May 2010 18:59:07 -0700	[thread overview]
Message-ID: <1273111147.1735.90.camel@Joe-Laptop.home> (raw)
In-Reply-To: <1FB5E1D5CA062146B38059374562DF72662A6F52@TK5EX14MBXC130.redmond.corp.microsoft.com>

On Thu, 2010-05-06 at 01:42 +0000, Haiyang Zhang wrote:
> > Why a maximum of 50 samples?
> After reboot the flag ICTIMESYNCFLAG_SYNC is included in the 
> first time message after the timesync channel is opened. Since the 
> hv_utils module is loaded after hv_vmbus, the first message is usually
> missed. The other thing is, systime is automatically set to emulated 
> hardware clock which may not be UTC time or the same time 
> zone. So, to override these effects, we use the first 50 time samples 
> for initial system time setting.

I suggest putting that in a commit message or a code comment.

cheers, Joe

      reply	other threads:[~2010-05-06  1:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-05 19:23 [PATCH 1/1] staging: hv: Add Time Sync feature to hv_utils module Haiyang Zhang
2010-05-06  0:58 ` Joe Perches
2010-05-06  1:42   ` Haiyang Zhang
2010-05-06  1:59     ` Joe Perches [this message]

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