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Date:	Wed, 16 Jul 2014 16:49:12 -0700
From:	"H. Peter Anvin" <>
To:	"Luck, Tony" <>,
	Hanjun Guo <>,
	"Rafael J. Wysocki" <>
CC:	Catalin Marinas <>,
	Graeme Gregory <>,
	Thomas Gleixner <>,
	"" <>,
	"" <>,
	"" <>
Subject: Re: [PATCH v2 1/3] ACPI: ARM64 does not have a BIOS add config for
 BIOS table scan.

On 07/16/2014 04:46 PM, Luck, Tony wrote:
>> This shouldn't actually be set on IA64, should it?  IA64 doesn't have
>> BIOS, either, it has EFI/UEFI, like ARM64...
> Which ACPI tables are in the "LEGACY" category affected by this option?

That's not what this is about... it is about how you find the root pointer.

On a BIOS system it is found by scanning low memory.  On an EFI system
it is found by querying EFI for a specific UUID.


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