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From: Andi Kleen <ak@suse.de>
To: tglx@linutronix.de, mingo@elte.hu, linux-kernel@vger.kernel.org
Subject: [PATCH] [4/12] Add pgtable accessor functions for GB pages
Date: Fri, 1 Feb 2008 10:53:17 +0100 (CET) [thread overview]
Message-ID: <20080201095317.3CBD81B416F@basil.firstfloor.org> (raw)
In-Reply-To: <200802011053.107168490@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
---
include/asm-x86/pgtable_32.h | 2 ++
include/asm-x86/pgtable_64.h | 6 ++++++
2 files changed, 8 insertions(+)
Index: linux/include/asm-x86/pgtable_64.h
===================================================================
--- linux.orig/include/asm-x86/pgtable_64.h
+++ linux/include/asm-x86/pgtable_64.h
@@ -199,6 +199,12 @@ static inline unsigned long pmd_bad(pmd_
#define pud_offset(pgd, address) ((pud_t *) pgd_page_vaddr(*(pgd)) + pud_index(address))
#define pud_present(pud) (pud_val(pud) & _PAGE_PRESENT)
+static inline int pud_large(pud_t pte)
+{
+ return (pud_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
+ (_PAGE_PSE|_PAGE_PRESENT);
+}
+
/* PMD - Level 2 access */
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PTE_MASK))
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
Index: linux/include/asm-x86/pgtable_32.h
===================================================================
--- linux.orig/include/asm-x86/pgtable_32.h
+++ linux/include/asm-x86/pgtable_32.h
@@ -148,6 +148,8 @@ static inline void clone_pgd_range(pgd_t
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+static inline int pud_large(pud_t pud) { return 0; }
+
/*
* the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
*
next prev parent reply other threads:[~2008-02-01 9:54 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-01 9:53 [PATCH] [0/12] GBPAGES patchkit for 2.6.25 v3 Andi Kleen
2008-02-01 9:53 ` [PATCH] [1/12] GBPAGES: Add feature macros for the gbpages cpuid bit Andi Kleen
2008-02-01 9:53 ` [PATCH] [2/12] GBPAGES: Rename LARGE_PAGE_SIZE to PMD_PAGE_SIZE Andi Kleen
2008-02-01 9:53 ` [PATCH] [3/12] GBPAGES: Add PUD_PAGE_SIZE Andi Kleen
2008-02-01 9:53 ` Andi Kleen [this message]
2008-02-01 9:53 ` [PATCH] [5/12] GBPAGES: Support gbpages in pagetable dump Andi Kleen
2008-02-01 9:53 ` [PATCH] [6/12] GBPAGES: Add gbpages support to lookup_address Andi Kleen
2008-02-01 9:53 ` [PATCH] [7/12] GBPAGES: Add an option to disable direct mapping gbpages and a global variable Andi Kleen
2008-02-05 22:41 ` Randy Dunlap
2008-02-01 9:53 ` [PATCH] [8/12] GBPAGES: Implement gbpages support in change_page_attr() Andi Kleen
2008-02-01 9:53 ` [PATCH] [9/12] GBPAGES: Switch pci-gart over to using cpa instead of clear_kernel_mapping Andi Kleen
2008-02-01 9:53 ` [PATCH] [10/12] GBPAGES: Remove now unused clear_kernel_mapping Andi Kleen
2008-02-01 9:53 ` [PATCH] [11/12] GBPAGES: Do kernel direct mapping at boot using GB pages Andi Kleen
2008-02-01 9:53 ` [PATCH] [12/12] GBPAGES: Switch direct mapping setup over to set_pte Andi Kleen
2008-02-01 17:37 ` Jeremy Fitzhardinge
2008-02-01 17:58 ` Andi Kleen
2008-02-01 19:16 ` Jeremy Fitzhardinge
2008-02-01 12:25 ` [PATCH] [0/12] GBPAGES patchkit for 2.6.25 v3 Thomas Gleixner
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