From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "Pavel Machek" <pavel@ucw.cz>, "Ingo Molnar" <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>,
"Ian Campbell" <ijc@hellion.org.uk>,
"Mika Penttilä" <mika.penttila@kolumbus.fi>,
linux-kernel@vger.kernel.org,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH] x86: Construct 32 bit boot time page tables in native format.
Date: Mon, 28 Jan 2008 21:50:14 +0100 [thread overview]
Message-ID: <200801282150.15411.rjw@sisk.pl> (raw)
In-Reply-To: <479E3EC6.5070800@goop.org>
On Monday, 28 of January 2008, Jeremy Fitzhardinge wrote:
> Rafael J. Wysocki wrote:
> > Actually, no. We only do that with the kernel code mapping which should be
> > safe as long as TLBs are not flushed (and they aren't).
> >
>
> Er, what? Assuming the TLB will retain some mappings while you
> overwrite the pagetable is a highly dubious prospect. Are you copying
> the same values over, or something else?
As long as a relocatable kernel is not used to restore a non-relocatable one
(or vice versa), we're copying the same values over.
Rafael
next prev parent reply other threads:[~2008-01-28 20:52 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-19 16:08 [PATCH] x86/voyager: Switch voyager memory detection to early_ioremap Ian Campbell
2008-01-19 16:08 ` [PATCH] x86: Construct 32 bit boot time page tables in native format Ian Campbell
2008-01-19 23:07 ` Andi Kleen
2008-01-19 23:50 ` H. Peter Anvin
2008-01-20 16:44 ` Ian Campbell
2008-01-20 17:39 ` Andi Kleen
2008-01-20 18:48 ` H. Peter Anvin
2008-01-20 18:55 ` Andi Kleen
2008-01-20 18:54 ` H. Peter Anvin
2008-01-22 10:05 ` Ingo Molnar
2008-01-22 16:23 ` H. Peter Anvin
2008-01-20 18:30 ` Mika Penttilä
2008-01-21 21:23 ` Ian Campbell
2008-01-21 21:38 ` H. Peter Anvin
2008-01-21 21:46 ` Ian Campbell
2008-01-22 2:16 ` H. Peter Anvin
2008-01-22 17:36 ` Ian Campbell
2008-01-22 18:23 ` H. Peter Anvin
2008-01-22 19:48 ` Ian Campbell
2008-01-22 20:00 ` H. Peter Anvin
2008-01-22 20:36 ` Ingo Molnar
2008-01-22 20:43 ` H. Peter Anvin
2008-01-22 20:45 ` Ingo Molnar
2008-01-22 20:52 ` Ian Campbell
2008-01-22 21:00 ` H. Peter Anvin
2008-01-22 22:21 ` Ian Campbell
2008-01-22 21:00 ` [PATCH] x86: make nx_enabled conditional on CONFIG_X86_PAE Harvey Harrison
2008-01-22 21:04 ` Ingo Molnar
2008-01-22 21:35 ` Harvey Harrison
2008-01-22 21:07 ` Harvey Harrison
[not found] ` <p73odbdlyiu.fsf@crumb.suse.de>
2008-01-23 11:21 ` Harvey Harrison
2008-01-23 20:52 ` [PATCH] x86: Construct 32 bit boot time page tables in native format Ian Campbell
2008-01-24 1:06 ` Jeremy Fitzhardinge
2008-01-24 9:39 ` Ian Campbell
2008-01-24 22:06 ` H. Peter Anvin
2008-01-24 22:35 ` Jeremy Fitzhardinge
2008-01-24 22:39 ` H. Peter Anvin
2008-01-24 22:58 ` Jeremy Fitzhardinge
2008-01-24 23:08 ` H. Peter Anvin
2008-01-24 23:40 ` Jeremy Fitzhardinge
2008-01-24 23:44 ` H. Peter Anvin
2008-01-24 23:51 ` Jeremy Fitzhardinge
2008-01-25 0:02 ` H. Peter Anvin
2008-01-25 0:11 ` Jeremy Fitzhardinge
2008-01-25 0:15 ` H. Peter Anvin
2008-01-25 0:31 ` Jeremy Fitzhardinge
2008-01-25 0:37 ` H. Peter Anvin
2008-01-25 2:56 ` Eric W. Biederman
2008-01-25 4:41 ` Jeremy Fitzhardinge
2008-01-25 11:07 ` Eric W. Biederman
2008-01-24 23:51 ` H. Peter Anvin
2008-01-25 0:20 ` Pavel Machek
2008-01-25 0:27 ` H. Peter Anvin
2008-01-25 0:46 ` Rafael J. Wysocki
2008-01-25 1:08 ` H. Peter Anvin
2008-01-25 2:16 ` Eric W. Biederman
2008-01-25 2:25 ` H. Peter Anvin
2008-01-25 7:49 ` Pavel Machek
2008-01-25 22:02 ` Rafael J. Wysocki
2008-01-25 22:11 ` Pavel Machek
2008-01-28 15:00 ` Ingo Molnar
2008-01-28 15:25 ` Rafael J. Wysocki
2008-01-28 19:40 ` Pavel Machek
2008-01-28 19:51 ` H. Peter Anvin
2008-01-28 20:03 ` Jeremy Fitzhardinge
2008-01-28 20:06 ` H. Peter Anvin
2008-01-28 20:28 ` Rafael J. Wysocki
2008-01-28 20:26 ` Rafael J. Wysocki
2008-01-28 20:31 ` H. Peter Anvin
2008-01-28 20:59 ` Rafael J. Wysocki
2008-01-28 20:44 ` Jeremy Fitzhardinge
2008-01-28 20:50 ` Rafael J. Wysocki [this message]
2008-01-28 21:28 ` H. Peter Anvin
2008-01-28 22:02 ` Rafael J. Wysocki
2008-01-28 16:12 ` Ingo Molnar
2008-01-28 17:02 ` Rafael J. Wysocki
2008-02-01 13:51 ` Ingo Molnar
2008-02-01 14:28 ` Rafael J. Wysocki
2008-02-01 14:54 ` Ingo Molnar
2008-02-01 22:55 ` Len Brown
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=200801282150.15411.rjw@sisk.pl \
--to=rjw@sisk.pl \
--cc=ebiederm@xmission.com \
--cc=hpa@zytor.com \
--cc=ijc@hellion.org.uk \
--cc=jeremy@goop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mika.penttila@kolumbus.fi \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=pavel@ucw.cz \
--cc=tglx@linutronix.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.