From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>,
virtualization <virtualization@lists.linux-foundation.org>,
linux-kernel@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Dave Jones <davej@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 05/12] i386: During page table initialization always set the leaf page table entries.
Date: Mon, 30 Apr 2007 09:34:14 -0700 [thread overview]
Message-ID: <46361A86.70408@goop.org> (raw)
In-Reply-To: <m1r6q14zow.fsf_-_@ebiederm.dsl.xmission.com>
Eric W. Biederman wrote:
> If we don't set the leaf page table entries it is quite possible that
> will inherit and incorrect page table entry from the initial boot
> page table setup in head.S. So we need to redo the effort here,
> so we pick up PSE, PGE and the like.
>
> Hypervisors like Xen require that their page tables be read-only,
> which is slightly incompatible with our low identity mappings, however
> I discussed this with Jeremy he has modified the Xen early set_pte
> function to avoid problems in this area.
>
> Andi I sent this once a part of the discussion on this issue so
> you may already have this patch in your queue.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
J
next prev parent reply other threads:[~2007-04-30 16:34 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-30 15:46 [PATCH 0/12] Early USB debug port and i386 boot cleanups Eric W. Biederman
2007-04-30 15:48 ` [PATCH 01/12] x86_64: Allow fixmaps to be used with the initial page table Eric W. Biederman
2007-04-30 15:49 ` [PATCH 02/12] i386 head.S: Remove unnecessary use of %ebx as the boot cpu flag Eric W. Biederman
2007-04-30 15:51 ` [PATCH 03/12] i386 head.S: Always run the full set of paging state Eric W. Biederman
2007-04-30 15:57 ` [PATCH 04/12] i386 voyager: Use modern techniques to setup and teardown low identiy mappings Eric W. Biederman
2007-04-30 15:57 ` Eric W. Biederman
2007-04-30 16:03 ` [PATCH 05/12] i386: During page table initialization always set the leaf page table entries Eric W. Biederman
2007-04-30 16:09 ` [PATCH 06/12] i386: Minimum cpu detection cleanups Eric W. Biederman
2007-04-30 16:09 ` Eric W. Biederman
2007-04-30 16:10 ` [PATCH 07/12] i386: Add missing !X86_PAE dependincy to the 2G/2G split Eric W. Biederman
2007-04-30 16:10 ` Eric W. Biederman
2007-04-30 16:15 ` [PATCH 08/12] i386: Convert the boot time page tables to the kernels native format Eric W. Biederman
2007-04-30 16:15 ` Eric W. Biederman
2007-04-30 16:26 ` Andi Kleen
2007-04-30 16:42 ` Eric W. Biederman
2007-04-30 16:42 ` Eric W. Biederman
2007-04-30 16:26 ` Andi Kleen
2007-04-30 16:32 ` [PATCH 09/12] i386/x86_64: EHCI usb debug port early printk support Eric W. Biederman
2007-04-30 16:32 ` Eric W. Biederman
2007-04-30 16:32 ` [PATCH 10/12] i386: Introduce head32.c Eric W. Biederman
2007-04-30 16:32 ` Eric W. Biederman
2007-04-30 16:33 ` [PATCH 11/12] i386: Move setup_idt from head.S to head32.c Eric W. Biederman
2007-04-30 16:33 ` Eric W. Biederman
2007-04-30 16:35 ` [PATCH 12/12] i386: remove cpuid checking in head.S Eric W. Biederman
2007-04-30 16:35 ` Eric W. Biederman
2007-04-30 17:56 ` [PATCH 09/12] i386/x86_64: EHCI usb debug port early printk support Andi Kleen
2007-04-30 17:56 ` Andi Kleen
2007-04-30 20:54 ` Eric W. Biederman
2007-04-30 20:54 ` Eric W. Biederman
2007-04-30 16:16 ` [PATCH 07/12] i386: Add missing !X86_PAE dependincy to the 2G/2G split H. Peter Anvin
2007-04-30 16:16 ` H. Peter Anvin
2007-04-30 16:39 ` Eric W. Biederman
2007-04-30 16:39 ` Eric W. Biederman
2007-04-30 16:13 ` [PATCH 06/12] i386: Minimum cpu detection cleanups H. Peter Anvin
2007-04-30 16:13 ` H. Peter Anvin
2007-04-30 16:19 ` Andi Kleen
2007-04-30 16:21 ` [PATCH 05/12] i386: During page table initialization always set the leaf page table entries Andi Kleen
2007-04-30 16:34 ` Jeremy Fitzhardinge
2007-04-30 16:34 ` Jeremy Fitzhardinge [this message]
2007-04-30 16:03 ` Eric W. Biederman
2007-04-30 17:06 ` [PATCH 04/12] i386 voyager: Use modern techniques to setup and teardown low identiy mappings James Bottomley
2007-04-30 17:06 ` James Bottomley
2007-04-30 15:51 ` [PATCH 03/12] i386 head.S: Always run the full set of paging state Eric W. Biederman
2007-04-30 15:49 ` [PATCH 02/12] i386 head.S: Remove unnecessary use of %ebx as the boot cpu flag Eric W. Biederman
2007-04-30 16:23 ` [PATCH 01/12] x86_64: Allow fixmaps to be used with the initial page table Andi Kleen
2007-04-30 15:48 ` Eric W. Biederman
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