From: Marcelo Tosatti <mtosatti@redhat.com>
To: Vadim Rozenfeld <vrozenfe@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>, kvm@vger.kernel.org, pl@dlh.net
Subject: Re: [RFC PATCH v2 2/2] add support for Hyper-V invariant TSC
Date: Fri, 24 May 2013 16:41:24 -0300 [thread overview]
Message-ID: <20130524194124.GA2888@amt.cnet> (raw)
In-Reply-To: <278937736.7040157.1369390276708.JavaMail.root@redhat.com>
On Fri, May 24, 2013 at 06:11:16AM -0400, Vadim Rozenfeld wrote:
> > Is there a better option?
> >
> If setting TscSequence to zero makes Windows fall back to the MSR this is a
> better option.
>
> +1
> This is why MS has two different mechanisms:
> iTSC as a primary, reference counters as a fall-back.
Ok, is it documented that transition
iTSC valid (Sequence != 0 and != 0xFFFFFFFF) ->
iTSC not valid but ref MSR valid (Sequence = 0),
is a valid transition?
It was not obvious for me. Can you point to documentation?
next prev parent reply other threads:[~2013-05-24 19:41 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-19 7:06 [RFC PATCH v2 0/2] Hyper-V timers Vadim Rozenfeld
2013-05-19 7:06 ` [RFC PATCH v2 1/2] add support for Hyper-V reference time counter Vadim Rozenfeld
2013-05-19 13:47 ` Gleb Natapov
2013-05-19 14:37 ` Paolo Bonzini
2013-05-22 0:46 ` Marcelo Tosatti
2013-05-22 3:28 ` Gleb Natapov
2013-05-22 3:32 ` Marcelo Tosatti
2013-05-22 3:38 ` Gleb Natapov
2013-05-22 14:31 ` Marcelo Tosatti
2013-05-22 7:32 ` Vadim Rozenfeld
2013-05-22 21:55 ` Paolo Bonzini
2013-05-23 6:17 ` Peter Lieven
2013-05-23 9:54 ` Paolo Bonzini
2013-05-23 10:45 ` Peter Lieven
2013-05-23 12:25 ` Vadim Rozenfeld
2013-05-23 13:18 ` Paolo Bonzini
2013-05-23 13:20 ` Peter Lieven
2013-05-23 13:23 ` Paolo Bonzini
2013-05-23 13:30 ` Peter Lieven
2013-05-23 13:40 ` Paolo Bonzini
2013-05-19 7:06 ` [RFC PATCH v2 2/2] add support for Hyper-V invariant TSC Vadim Rozenfeld
2013-05-22 0:50 ` Marcelo Tosatti
2013-05-22 7:22 ` Vadim Rozenfeld
2013-05-22 21:23 ` Marcelo Tosatti
2013-05-23 6:18 ` Peter Lieven
2013-05-23 9:13 ` Gleb Natapov
2013-05-23 13:35 ` Marcelo Tosatti
2013-05-23 15:14 ` Gleb Natapov
2013-05-24 9:57 ` Vadim Rozenfeld
2013-05-23 12:33 ` Vadim Rozenfeld
2013-05-23 12:44 ` Peter Lieven
2013-05-23 12:45 ` Gleb Natapov
2013-05-23 12:54 ` Vadim Rozenfeld
2013-05-23 9:12 ` Gleb Natapov
2013-05-23 13:53 ` Marcelo Tosatti
2013-05-23 15:31 ` Gleb Natapov
2013-05-24 10:11 ` Vadim Rozenfeld
2013-05-24 19:41 ` Marcelo Tosatti [this message]
2013-05-27 12:33 ` Vadim Rozenfeld
2013-05-23 12:21 ` Vadim Rozenfeld
2013-05-23 13:47 ` Marcelo Tosatti
2013-05-24 10:01 ` Vadim Rozenfeld
2013-05-23 16:44 ` Paolo Bonzini
2013-05-24 10:16 ` Vadim Rozenfeld
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