From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Sheng Yang <sheng@linux.intel.com>
Cc: Ian Campbell <Ian.Campbell@eu.citrix.com>,
Ian Pratt <Ian.Pratt@eu.citrix.com>,
xen-devel <xen-devel@lists.xensource.com>,
Tim Deegan <Tim.Deegan@citrix.com>,
Keir Fraser <Keir.Fraser@eu.citrix.com>
Subject: Re: Re: [PATCH][v4] PV extension of HVM(hybrid) support in Xen
Date: Mon, 01 Mar 2010 17:49:55 -0800 [thread overview]
Message-ID: <4B8C6EC3.2020307@goop.org> (raw)
In-Reply-To: <201003011940.50685.sheng@linux.intel.com>
On 03/01/2010 03:40 AM, Sheng Yang wrote:
> The issue is pv timer. It assumed the tsc start from 0, which is different
> from HVM. So I'd like to give it a explicit call here. Otherwise it can be
> hooked in evtchn binding, but I don't think that's clear...
>
>
[...]
>> Only vcpu 0? Doesn't this do horrible things to timekeeping in the guest?
>>
> The other vcpus are initialized when it is brought up. TSC started from 0 is a
> fundamental assumption for pv clock in Linux...
>
Could you expand on this? Do you mean in the pvops Xen time code? What
do you mean?
J
next prev parent reply other threads:[~2010-03-02 1:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-01 9:43 [PATCH][v4] PV extension of HVM(hybrid) support in Xen Sheng Yang
2010-03-01 10:00 ` Keir Fraser
2010-03-01 10:52 ` Stefano Stabellini
2010-03-01 10:21 ` Tim Deegan
2010-03-01 11:40 ` Sheng Yang
2010-03-02 1:49 ` Jeremy Fitzhardinge [this message]
2010-03-02 3:36 ` Sheng Yang
2010-03-02 4:39 ` Jeremy Fitzhardinge
2010-03-02 5:04 ` Sheng Yang
2010-03-02 5:21 ` Jeremy Fitzhardinge
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