linux-kernel - Re: [PATCH] x86: not overmap than end in init_memory_mapping

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Date:	Wed, 9 Jul 2008 03:01:14 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: not overmap than end in init_memory_mapping - 64bit

On Wed, Jul 9, 2008 at 1:46 AM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
>> > reverting the commit solves the crash. The crash seems to be because
>> > ACPI is unable to access that memory range. (perhaps early_ioremap
>> > fails?)
>>
>> system with less than 4g?
>
> yeah.
>
>> please test attached patch
>> [PATCH] x86: make max_pfn cover acpi table below 4g
>
> that fixed it, thanks.

please check fix for 32 bit too.

YH

View attachment "e820_end_32.patch" of type "text/x-patch" (746 bytes)