linux-kernel - Re: Confusions with reserve_early, reserve_bootmem, e820, efi, ... on x86

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Message-Id: <20080612171354.b97d5da6.pj@sgi.com>
Date:	Thu, 12 Jun 2008 17:13:54 -0500
From:	Paul Jackson <pj@....com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	hpa@...or.com, andi@...stfloor.org, mingo@...e.hu, bwalle@...e.de,
	hannes@...urebad.de, ying.huang@...el.com,
	linux-kernel@...r.kernel.org, steiner@....com
Subject: Re: Confusions with reserve_early, reserve_bootmem, e820, efi, ...
 on x86_64

Yinghai wrote:
> what is addr that the EFI memmap should be according to spec?

The EFI memmap has no specific address by specification.  Rather the
BIOS/firmware can put it where it will, and then pass that address via
the boot_parms.efi_info.memmap field.  See include/asm-x86/bootparam.h
for these structures.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.940.382.4214
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