From: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
Cc: kvm-devel
<kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
Jeremy Fitzhardinge <jeremy-TSDbQ3PG+2Y@public.gmane.org>,
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
Hollis Blanchard
<hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC] Paravirt timer for KVM
Date: Mon, 15 Oct 2007 10:41:43 +0200 [thread overview]
Message-ID: <471327C7.8060304@redhat.com> (raw)
In-Reply-To: <470FD2CA.1000702-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
Hi,
> 2) the TSC would have to be used as a clocksource. You don't know the
> frequency which is the first problem with using the TSC but some systems
> have a TSC that changes frequencies.
Also note the tsc may stop ticking if the CPU goes sleep in C3, which
IMHO makes the tsc almost useless as clocksource for guests ...
cheers,
Gerd
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next prev parent reply other threads:[~2007-10-15 8:41 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-12 16:08 [RFC] Paravirt timer for KVM Glauber de Oliveira Costa
[not found] ` <5d6222a80710120908s6b1f5845head84e7b7a463cd1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-12 18:10 ` Anthony Liguori
[not found] ` <470FB8AB.9030101-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-15 16:58 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710150958y31338c2ag3a391390b13788da-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-15 17:07 ` Avi Kivity
[not found] ` <47139E6F.7030704-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 18:09 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151109m5376449foc6be5b687c469a2b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:31 ` Avi Kivity
2007-10-12 18:39 ` Jeremy Fitzhardinge
[not found] ` <470FBF58.2080701-TSDbQ3PG+2Y@public.gmane.org>
2007-10-12 18:58 ` Anthony Liguori
2007-10-15 17:15 ` Glauber de Oliveira Costa
2007-10-12 19:48 ` Hollis Blanchard
2007-10-12 20:02 ` Anthony Liguori
[not found] ` <470FD2CA.1000702-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-12 21:55 ` Hollis Blanchard
2007-10-12 22:07 ` Anthony Liguori
[not found] ` <470FF036.6080803-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-15 4:04 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A023A6DCE-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-15 16:01 ` Hollis Blanchard
2007-10-15 16:47 ` Avi Kivity
[not found] ` <47139994.4030606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 23:05 ` Hollis Blanchard
2007-10-16 8:15 ` Gerd Hoffmann
[not found] ` <4714731D.4040408-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-16 10:27 ` Avi Kivity
2007-10-16 9:45 ` Avi Kivity
[not found] ` <4714882C.2050504-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-16 10:03 ` Dong, Eddie
2007-10-15 17:52 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151052j37f0561dn6dbb5b07f6f697d1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:17 ` Avi Kivity
2007-10-15 17:38 ` Glauber de Oliveira Costa
2007-10-15 8:41 ` Gerd Hoffmann [this message]
[not found] ` <471327C7.8060304-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-15 9:07 ` Avi Kivity
[not found] ` <47132DCF.3060906-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 9:56 ` Gerd Hoffmann
[not found] ` <47133957.20508-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-15 10:14 ` Gildas
2007-10-15 11:02 ` Carsten Otte
[not found] ` <471348B1.30300-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2007-10-15 16:31 ` Jeremy Fitzhardinge
2007-10-15 18:03 ` Glauber de Oliveira Costa
2007-10-15 18:00 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151100p63e8e9aata79b006b43f6c37e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:20 ` Avi Kivity
2007-10-16 7:40 ` Gerd Hoffmann
2007-10-15 17:53 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151029y288fc65bs3d325d5c8d1f039c@mail.gmail.com>
[not found] ` <1192489814.22523.36.camel@basalt>
2007-10-16 1:26 ` Glauber de Oliveira Costa
2007-10-12 22:09 ` Hollis Blanchard
2007-10-15 17:48 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151048t22e747l42106a6507c811c6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-15 22:54 ` Hollis Blanchard
2007-10-16 1:15 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151815m2330c8b7ocf4fc352954a551c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 9:47 ` Avi Kivity
2007-10-16 7:14 ` Avi Kivity
2007-10-16 8:41 ` Dong, Eddie
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