From: Avi Kivity <avi@redhat.com>
To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>,
kurt.hackel@oracle.com, Glauber Costa <glommer@redhat.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Glauber de Oliveira Costa <gcosta@redhat.com>,
Xen-devel <xen-devel@lists.xensource.com>,
Keir Fraser <keir.fraser@eu.citrix.com>,
zach.brown@oracle.com, Ingo Molnar <mingo@redhat.com>,
chris.mason@oracle.com
Subject: Re: [Xen-devel] Re: [PATCH 3/5] x86/pvclock: add vsyscall implementation
Date: Sun, 01 Nov 2009 11:28:49 +0200 [thread overview]
Message-ID: <4AED54D1.6070706@redhat.com> (raw)
In-Reply-To: <f14ec444-c388-4275-8f9d-e873d1e6ea40@default>
On 10/29/2009 06:15 PM, Dan Magenheimer wrote:
> On a related note, though some topic drift, many of
> the problems that occur in virtualization due to migration
> could be better addressed if Linux had an architected
> interface to allow it to be signaled if a migration
> occurred, and if Linux could signal applications of
> the same. I don't have any cycles (pun intended) to
> think about this right now, but if anyone else starts
> looking at it, I'd love to be cc'ed.
>
IMO that's not a good direction. The hypervisor should not depend on
the guest for migration (the guest may be broken, or malicious, or being
debugged, or slow). So the notification must be asynchronous, which
means that it will only be delivered to applications after migration has
completed.
Instead of a "migration has occured, run for the hills" signal we're
better of finding out why applications want to know about this event and
addressing specific needs.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-11-01 9:29 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-06 0:50 [PATCH RFC] Extending pvclock down to usermode for vsyscall Jeremy Fitzhardinge
2009-10-06 0:50 ` [PATCH 1/5] x86/pvclock: make sure rdtsc doesn't speculate out of region Jeremy Fitzhardinge
2009-10-06 0:50 ` [PATCH 2/5] x86/pvclock: no need to use strong read barriers in pvclock_get_time_values Jeremy Fitzhardinge
2009-10-06 0:50 ` [PATCH 3/5] x86/pvclock: add vsyscall implementation Jeremy Fitzhardinge
2009-10-06 9:04 ` Avi Kivity
2009-10-06 14:19 ` Dan Magenheimer
2009-10-06 15:11 ` Avi Kivity
2009-10-06 18:46 ` [Xen-devel] " Jeremy Fitzhardinge
2009-10-07 10:25 ` Avi Kivity
2009-10-07 19:29 ` Jeremy Fitzhardinge
2009-10-07 20:09 ` Avi Kivity
2009-10-07 21:19 ` Jeremy Fitzhardinge
2009-10-07 21:37 ` Avi Kivity
2009-10-07 21:51 ` Jeremy Fitzhardinge
2009-10-07 21:53 ` Avi Kivity
2009-10-07 20:48 ` Dan Magenheimer
2009-10-07 21:08 ` Avi Kivity
2009-10-07 22:36 ` Dan Magenheimer
2009-10-10 0:24 ` Jeremy Fitzhardinge
2009-10-10 18:10 ` Avi Kivity
2009-10-12 18:20 ` Jeremy Fitzhardinge
2009-10-12 18:29 ` Avi Kivity
2009-10-12 19:13 ` Jeremy Fitzhardinge
2009-10-13 6:39 ` Avi Kivity
2009-10-13 20:00 ` Jeremy Fitzhardinge
2009-10-14 12:32 ` Avi Kivity
2009-10-15 19:17 ` Jeremy Fitzhardinge
2009-10-27 17:29 ` Dan Magenheimer
2009-10-27 18:20 ` Jeremy Fitzhardinge
2009-10-28 5:52 ` Avi Kivity
2009-10-28 9:29 ` Glauber Costa
2009-10-28 9:34 ` Avi Kivity
2009-10-28 17:47 ` Jeremy Fitzhardinge
2009-10-29 12:13 ` Avi Kivity
2009-10-29 13:03 ` Chris Mason
2009-10-29 14:46 ` Dan Magenheimer
2009-10-29 15:07 ` Avi Kivity
2009-10-29 15:55 ` Dan Magenheimer
2009-10-29 16:15 ` Dan Magenheimer
2009-11-01 9:28 ` Avi Kivity [this message]
2009-11-02 15:28 ` Dan Magenheimer
2009-11-02 15:41 ` Avi Kivity
2009-11-01 9:32 ` Avi Kivity
2009-11-02 15:46 ` Dan Magenheimer
2009-11-03 5:12 ` Avi Kivity
2009-11-04 20:30 ` Dan Magenheimer
2009-11-05 6:47 ` Avi Kivity
2009-11-05 14:52 ` Dan Magenheimer
2009-11-05 15:07 ` Keir Fraser
2009-11-04 21:19 ` john stultz
2009-11-04 21:28 ` Dan Magenheimer
2009-11-05 0:02 ` john stultz
2009-11-05 0:45 ` Dan Magenheimer
2009-10-06 0:50 ` [PATCH 4/5] x86/fixmap: add a predicate for usermode fixmaps Jeremy Fitzhardinge
2009-10-06 10:23 ` [Xen-devel] " Jan Beulich
2009-10-06 18:47 ` Jeremy Fitzhardinge
2009-10-06 0:50 ` [PATCH 5/5] xen/time: add pvclock_clocksource_vread support Jeremy Fitzhardinge
2009-10-06 10:28 ` [Xen-devel] " Jan Beulich
2009-10-06 18:48 ` Jeremy Fitzhardinge
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4AED54D1.6070706@redhat.com \
--to=avi@redhat.com \
--cc=chris.mason@oracle.com \
--cc=dan.magenheimer@oracle.com \
--cc=gcosta@redhat.com \
--cc=glommer@redhat.com \
--cc=jeremy.fitzhardinge@citrix.com \
--cc=keir.fraser@eu.citrix.com \
--cc=kurt.hackel@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=x86@kernel.org \
--cc=xen-devel@lists.xensource.com \
--cc=zach.brown@oracle.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).