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Re: [PATCH] x86: Construct 32 bit boot time page tables in native format.

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From: Pavel Machek <pavel@...>
To: Rafael J. Wysocki <rjw@...>
Cc: Ingo Molnar <mingo@...>, H. Peter Anvin <hpa@...>, Jeremy Fitzhardinge <jeremy@...>, Ian Campbell <ijc@...>, Mika <mika.penttila@...>, <linux-kernel@...>, Thomas Gleixner <tglx@...>, Ingo Molnar <mingo@...>, Eric W. Biederman <ebiederm@...>
Subject: Re: [PATCH] x86: Construct 32 bit boot time page tables in native format.
Date: Monday, January 28, 2008 - 3:40 pm

Hi!


Sorry, this is subtle and I've overlooked it before.

(I thought you were only changing ifdef).

Now you memcpy() over pg_dir when that pgdir is in use during swsusp
resume. Granted, you memcpy() with same data that already are there,
but it may still do some funny effects.

Hmm, but same argument applies to lower levels of paging in 64-bit and
PAE cases, and we still do that memcpy-over-active-pagetables there...
:-(.

							Pavel
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Messages in current thread:
[PATCH] x86/voyager: Switch voyager memory detection to earl..., Ian Campbell, (Sat Jan 19, 12:08 pm)
[PATCH] x86: Construct 32 bit boot time page tables in nativ..., Ian Campbell, (Sat Jan 19, 12:08 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Mika Penttilä, (Sun Jan 20, 2:30 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Mon Jan 21, 5:23 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 21, 5:38 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Mon Jan 21, 5:46 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 21, 10:16 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Tue Jan 22, 1:36 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Tue Jan 22, 2:23 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Tue Jan 22, 3:48 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Tue Jan 22, 4:00 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Tue Jan 22, 4:36 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Wed Jan 23, 4:52 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Wed Jan 23, 9:06 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Thu Jan 24, 5:39 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 6:06 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 6:35 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 6:39 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 6:58 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 7:08 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 7:40 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 7:51 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Pavel Machek, (Thu Jan 24, 8:20 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 8:27 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Pavel Machek, (Fri Jan 25, 3:49 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Fri Jan 25, 6:02 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Mon Jan 28, 11:00 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Mon Jan 28, 12:12 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 1:02 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Fri Feb 1, 9:51 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Fri Feb 1, 10:28 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Fri Feb 1, 10:54 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Len Brown, (Fri Feb 1, 6:55 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 11:25 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Pavel Machek, (Mon Jan 28, 3:40 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 4:26 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Mon Jan 28, 4:44 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 4:50 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 28, 5:28 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 6:02 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 28, 4:31 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 4:59 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 28, 3:51 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Mon Jan 28, 4:03 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Mon Jan 28, 4:06 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Mon Jan 28, 4:28 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Pavel Machek, (Fri Jan 25, 6:11 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Eric W. Biederman, (Thu Jan 24, 10:16 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 10:25 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Rafael J. Wysocki, (Thu Jan 24, 8:46 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 9:08 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 7:44 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 7:51 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 8:02 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 8:11 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 8:15 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Thu Jan 24, 8:31 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Thu Jan 24, 8:37 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Eric W. Biederman, (Thu Jan 24, 10:56 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Jeremy Fitzhardinge, (Fri Jan 25, 12:41 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Eric W. Biederman, (Fri Jan 25, 7:07 am)
[PATCH] x86: make nx_enabled conditional on CONFIG_X86_PAE, Harvey Harrison, (Tue Jan 22, 5:00 pm)
Re: [PATCH] x86: make nx_enabled conditional on CONFIG_X86_PAE, Harvey Harrison, (Tue Jan 22, 5:07 pm)
Re: [PATCH] x86: make nx_enabled conditional on CONFIG_X86_PAE, Ingo Molnar, (Tue Jan 22, 5:04 pm)
Re: [PATCH] x86: make nx_enabled conditional on CONFIG_X86_PAE, Harvey Harrison, (Tue Jan 22, 5:35 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Tue Jan 22, 4:52 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Tue Jan 22, 5:00 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Tue Jan 22, 6:21 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Tue Jan 22, 4:43 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Tue Jan 22, 4:45 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Andi Kleen, (Sat Jan 19, 7:07 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ian Campbell, (Sun Jan 20, 12:44 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Andi Kleen, (Sun Jan 20, 1:39 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Sun Jan 20, 2:48 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Ingo Molnar, (Tue Jan 22, 6:05 am)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Tue Jan 22, 12:23 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., Andi Kleen, (Sun Jan 20, 2:55 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Sun Jan 20, 2:54 pm)
Re: [PATCH] x86: Construct 32 bit boot time page tables in n..., H. Peter Anvin, (Sat Jan 19, 7:50 pm)