linux-kernel - Re: [PATCH] x86: fix init_memory

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Date:	Sat, 28 Jun 2008 09:21:59 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: fix init_memory_mapping over boundary v2


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> On Sat, Jun 28, 2008 at 12:02 AM, Ingo Molnar <mingo@...e.hu> wrote:
> >
> > * Ingo Molnar <mingo@...e.hu> wrote:
> >
> >> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
> >>
> >> > some end boundary is only page alignment, instead of 2M alignment, so
> >> > call ker_phycial_mapping_init three times. then don't overmap above
> >> > the max_low_pfn
> >>
> >> applied to tip/x86/unify-setup, thanks Yinghai.
> >
> > -tip testing found a 32-bit spontaneous reboot during bootup, with this
> > config:
> >
> >  http://redhat.com/~mingo/misc/config-Sat_Jun_28_08_43_52_CEST_2008.bad
> >
> > no serial log produced at all.
> >
> > doing the reverts below fixes the problem.
> >
> >        Ingo
> >
> > commit 4ae56755fa1e1bd1500c97b5bf82d6519a261ffd
> > Author: Ingo Molnar <mingo@...e.hu>
> > Date:   Sat Jun 28 08:59:44 2008 +0200
> >
> >    Revert "x86: let setup_arch call init_apic_mappings for 32bit"
> >
> >    This reverts commit 7fce3bb20100e5b6c42ad66c495e6348522bfd37.
> >
> > commit 2703b959fc588f1b77290272f60bcf0bd8f6e557
> > Author: Ingo Molnar <mingo@...e.hu>
> > Date:   Sat Jun 28 08:59:39 2008 +0200
> >
> >    Revert "x86: fix init_memory_mapping over boundary v2"
> >
> >    This reverts commit 7a41ed2c98f860da38a944d8de5b29e6ec39cf76.
> >
> the system with 512M ?

no, other 32-bit testsystems: 1GB RAM, 2GB RAM, etc.

	Ingo
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