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Date:	Wed, 11 Nov 2009 11:05:38 -0800
From:	Yinghai Lu <>
To:	ykzhao <>
CC:	"Rafael J. Wysocki" <>, Ingo Molnar <>,
	Thomas Gleixner <>,
	"H. Peter Anvin" <>, Len Brown <>,
	"" <>,
	ACPI Devel Maling List <>,
	pm list <>
Subject: Re: [PATCH] x86: make sure wakeup code is below 1M -v2

ykzhao wrote:
> On Wed, 2009-11-11 at 10:27 +0800, Yinghai Lu wrote:
>> try to find_e820_area/reserve_early, and call acpi_reserve_memory early
>> to get area is below 1M
>> -v2: change function name to acpi_reserve_wakeup_memory according to Rafael
> It seems that the function of find_e820_area is called in several
> places.
>    >Initmem_init: bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT,
> bootmap_size, PAGE_SIZE);
> If we also call it in the acpi_reserve_wakeup_memory, do we get the same
> base address as that obtained in initmem_init?

no. find_e820_area will check the reserve res array that could be updated by reserve_early.

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