From: Andi Kleen <ak@suse.de>
To: mingo@elte.hu, tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: [PATCH] [6/9] GBPAGES: Add gbpages support to lookup_address
Date: Tue, 29 Jan 2008 06:06:34 +0100 (CET) [thread overview]
Message-ID: <20080129050634.B1B811B416E@basil.firstfloor.org> (raw)
In-Reply-To: <20080129606.610336873@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
---
arch/x86/mm/pageattr.c | 5 +++++
include/asm-x86/pgtable.h | 1 +
2 files changed, 6 insertions(+)
Index: linux/arch/x86/mm/pageattr.c
===================================================================
--- linux.orig/arch/x86/mm/pageattr.c
+++ linux/arch/x86/mm/pageattr.c
@@ -152,9 +152,14 @@ pte_t *lookup_address(unsigned long addr
if (pgd_none(*pgd))
return NULL;
+
+ *level = PG_LEVEL_1G;
pud = pud_offset(pgd, address);
if (pud_none(*pud))
return NULL;
+ if (pud_large(*pud))
+ return (pte_t *)pud;
+
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return NULL;
Index: linux/include/asm-x86/pgtable.h
===================================================================
--- linux.orig/include/asm-x86/pgtable.h
+++ linux/include/asm-x86/pgtable.h
@@ -242,6 +242,7 @@ enum {
PG_LEVEL_NONE,
PG_LEVEL_4K,
PG_LEVEL_2M,
+ PG_LEVEL_1G,
};
/*
next prev parent reply other threads:[~2008-01-29 5:09 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-29 5:06 [PATCH] [0/9] Latest GBPAGES patchkit for 2.6.25 Andi Kleen
2008-01-29 5:06 ` [PATCH] [1/9] Handle kernel near memory hole in clear_kernel_mapping Andi Kleen
2008-01-31 15:48 ` Thomas Gleixner
2008-01-31 16:22 ` Andi Kleen
2008-01-29 5:06 ` [PATCH] [2/9] GBPAGES: Add feature macros for the gbpages cpuid bit Andi Kleen
2008-01-29 5:06 ` [PATCH] [3/9] GBPAGES: Split LARGE_PAGE_SIZE/MASK into PUD_PAGE_SIZE/PMD_PAGE_SIZE Andi Kleen
2008-01-31 15:57 ` Thomas Gleixner
2008-01-29 5:06 ` [PATCH] [4/9] Add pgtable accessor functions for GB pages Andi Kleen
2008-01-29 5:06 ` [PATCH] [5/9] GBPAGES: Support gbpages in pagetable dump Andi Kleen
2008-01-29 5:06 ` Andi Kleen [this message]
2008-01-31 16:02 ` [PATCH] [6/9] GBPAGES: Add gbpages support to lookup_address Thomas Gleixner
2008-01-29 5:06 ` [PATCH] [7/9] Add an option to disable direct mapping gbpages and a global variable Andi Kleen
2008-01-31 16:12 ` Thomas Gleixner
2008-01-31 16:24 ` Andi Kleen
2008-01-31 17:00 ` Thomas Gleixner
2008-01-29 5:06 ` [PATCH] [8/9] GBPAGES: Implement gbpages support in change_page_attr() Andi Kleen
2008-01-29 5:06 ` [PATCH] [9/9] GBPAGES: Do kernel direct mapping at boot using GB pages Andi Kleen
2008-01-31 16:17 ` Thomas Gleixner
2008-01-31 16:38 ` Andi Kleen
2008-01-31 17:10 ` Thomas Gleixner
2008-01-31 17:39 ` Andi Kleen
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