linux-kernel - [PATCH] [6/12] GBPAGES: Add gbpages support to lookup

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Message-Id: <20080201095319.46AE71B416F@basil.firstfloor.org>
Date:	Fri,  1 Feb 2008 10:53:19 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	tglx@...utronix.de, mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: [PATCH] [6/12] GBPAGES: Add gbpages support to lookup_address


Signed-off-by: Andi Kleen <ak@...e.de>

---
 arch/x86/mm/pageattr.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux/arch/x86/mm/pageattr.c
===================================================================
--- linux.orig/arch/x86/mm/pageattr.c
+++ linux/arch/x86/mm/pageattr.c
@@ -155,6 +155,11 @@ pte_t *lookup_address(unsigned long addr
 	pud = pud_offset(pgd, address);
 	if (pud_none(*pud))
 		return NULL;
+
+	*level = PG_LEVEL_1G;
+	if (pud_large(*pud))
+		return (pte_t *)pud;
+
 	pmd = pmd_offset(pud, address);
 	if (pmd_none(*pmd))
 		return NULL;
--
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