linux-kernel - Re: Suspected regression in "x86: extend e820 ealy

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Message-ID: <86802c440805211335q27334ba1g32a43fb1c0498b9b@mail.gmail.com>
Date:	Wed, 21 May 2008 13:35:40 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Jeremy Fitzhardinge" <jeremy@...p.org>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"kernel list" <linux-kernel@...r.kernel.org>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: Suspected regression in "x86: extend e820 ealy_res support 32bit"

On Wed, May 21, 2008 at 11:19 AM, Jeremy Fitzhardinge <jeremy@...p.org> wrote:
> I'm seeing a crash in current x86.git tip/auto-latest when booting under
> Xen.  The crash is rather early, but it's in __alloc_bootmem_core() in the
> final memset clear.  Apparently the allocator is returning a bad page.
>
> This points to changes in the setup of the bootmem allocator, and the
> changes "x86: extend e820 ealy_res support 32bit" make to
> arch/x86/kernel/setup_32.c:setup_bootmem_allocator() looks like the most
> likely suspect.  Unfortunately its a rather large patch which is not easy to
> revert, so I haven't actually confirmed this yet.


thanks. please check the attached patch

YH

View attachment "bootmap_32_fix.patch" of type "text/x-patch" (1371 bytes)