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[Xen-devel] [PATCH] Re: Ever increasing time offset for HVM domain / Huge amounts of drift



>>> On 17.01.13 at 17:41, Tim Deegan <tim@xxxxxxx> wrote:
> At 13:55 +0000 on 17 Jan (1358430927), Tim Deegan wrote:
>> It's possible that the code to calculate 'current CMOS time' for a VM is
>> buggy -- that was changed in 4.2.  Cc'ing the people who touched that
>> code in 4.2 for their opinions.
> 
> In fact I think it's the code that handles CMOS writes.  The attached
> patch fixes the issue for me; can you try it on your system?

Looks plausible, so feel free to put my ack on it if it also helps
Phil.

> (Jan, this is a candidate for applying to 4.2 as well as unstable.)

I agree, but the code you touch here hasn't been changed for
years (and even the involved helper functions changed only
marginally between 4.1 and 4.2), so wouldn't that have been
a problem for much longer? In which case it ought to also go
into 4.1?

Jan


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