From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>, Andi Kleen <ak@suse.de>,
Jan Beulich <jbeulich@novell.com>,
Eduardo Pereira Habkost <ehabkost@redhat.com>,
Ian Campbell <ijc@hellion.org.uk>, H Peter Anvin <hpa@zytor.com>
Subject: Re: [PATCH 00 of 11] x86: separate pmd lifetime from pgd
Date: Mon, 28 Jan 2008 08:20:48 -0800 [thread overview]
Message-ID: <479E00E0.2030908@goop.org> (raw)
In-Reply-To: <20080128154140.GA17017@elte.hu>
Ingo Molnar wrote:
> and after a session of bisection, the winner patch is:
>
> Subject: x86: unify PAE/non-PAE pgd_ctor
>
> which is a tad unexpected, given the relatively harmless nature of the
> patch. (but then again, nothing is really harmless in PAE land.)
>
Oh, well, good. At least off-the-cuff diagnosis was right. I must have
overlooked some detail in that merge.
> btw., this is not fair i think: your patch was apparently caught by the
> new debugging helper that tells about itself here:
>
>
>> [ 29.389872] debug: unmapping init memory c0b03000..c0b6f000
>>
>
> note the close proximity of c0b6f000 and ebx = c0b6fc08. [ I regularly
> come up with such nasty tricks and debugging helpers like that to catch
> bad patches off-guard. You have been warned! ;-) ]
>
Hm, perhaps, but it could be as easily coincidence. The place there
initmem is freed is close to where it first needs to rely on a
non-initmm pagetable. I presume that message means that c0b6f000 was
*not* freed.
J
prev parent reply other threads:[~2008-01-28 16:20 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 21:23 [PATCH 00 of 11] x86: separate pmd lifetime from pgd Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 01 of 11] xen: fix mismerge in masking pte flags Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 02 of 11] x86: use the same pgd_list for PAE and 64-bit Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 03 of 11] x86: add mm parameter to paravirt_alloc_pd Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 04 of 11] x86: fix early_ioremap pagetable ops Jeremy Fitzhardinge
2008-01-31 19:01 ` Ian Campbell
2008-01-31 19:52 ` Jeremy Fitzhardinge
2008-01-31 20:37 ` Ingo Molnar
2008-01-31 20:41 ` Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 05 of 11] x86: demacro asm-x86/pgalloc_32.h Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 06 of 11] x86: unify PAE/non-PAE pgd_ctor Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 07 of 11] x86: don't special-case pmd allocations as much Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 08 of 11] xen: deal with pmd being allocated/freed Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 09 of 11] x86: preallocate pmds at pgd creation time Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 10 of 11] x86: allocate and initialize unshared pmds Jeremy Fitzhardinge
2008-01-25 21:23 ` [PATCH 11 of 11] x86: defer cr3 reload when doing pud_clear() Jeremy Fitzhardinge
2008-01-25 21:37 ` H. Peter Anvin
2008-01-25 22:54 ` Jeremy Fitzhardinge
2008-01-25 23:38 ` Keir Fraser
2008-01-25 23:44 ` Jeremy Fitzhardinge
2008-01-26 0:11 ` Ingo Molnar
2008-01-26 0:20 ` H. Peter Anvin
2008-01-26 5:57 ` Andi Kleen
2008-01-26 6:03 ` H. Peter Anvin
2008-01-26 0:10 ` H. Peter Anvin
2008-01-26 0:57 ` Jeremy Fitzhardinge
2008-01-26 1:09 ` H. Peter Anvin
2008-01-28 15:17 ` [PATCH 00 of 11] x86: separate pmd lifetime from pgd Ingo Molnar
2008-01-28 15:39 ` Jeremy Fitzhardinge
2008-01-28 15:41 ` Ingo Molnar
2008-01-28 15:47 ` Ingo Molnar
2008-01-28 16:20 ` Jeremy Fitzhardinge [this message]
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