linux-kernel - [PATCH 13/20] x86_64: Modify discover

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Message-ID: <20070307071603.GN23412@in.ibm.com>
Date:	Wed, 7 Mar 2007 12:46:03 +0530
From:	Vivek Goyal <vgoyal@...ibm.com>
To:	linux kernel mailing list <linux-kernel@...r.kernel.org>
Cc:	Reloc Kernel List <fastboot@...ts.osdl.org>, ebiederm@...ssion.com,
	akpm@...ux-foundation.org, ak@...e.de, hpa@...or.com,
	magnus.damm@...il.com, lwang@...hat.com, dzickus@...hat.com,
	pavel@...e.cz, rjw@...k.pl
Subject: [PATCH 13/20] x86_64: Modify discover_ebda to use virtual addresses



Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
Signed-off-by: Vivek Goyal <vgoyal@...ibm.com>
---

 arch/x86_64/kernel/setup.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN arch/x86_64/kernel/setup.c~x86_64-Modify-discover_ebda-to-use-virtual-addresses arch/x86_64/kernel/setup.c
--- linux-2.6.21-rc2-reloc/arch/x86_64/kernel/setup.c~x86_64-Modify-discover_ebda-to-use-virtual-addresses	2007-03-07 01:28:51.000000000 +0530
+++ linux-2.6.21-rc2-reloc-root/arch/x86_64/kernel/setup.c	2007-03-07 01:28:51.000000000 +0530
@@ -205,10 +205,10 @@ static void discover_ebda(void)
 	 * there is a real-mode segmented pointer pointing to the 
 	 * 4K EBDA area at 0x40E
 	 */
-	ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER;
+	ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER);
 	ebda_addr <<= 4;
 
-	ebda_size = *(unsigned short *)(unsigned long)ebda_addr;
+	ebda_size = *(unsigned short *)__va(ebda_addr);
 
 	/* Round EBDA up to pages */
 	if (ebda_size == 0)
_
-
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