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From: Andi Kleen <ak@suse.de>
To: mingo@elte.hu, tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: [PATCH] [4/8] Add pgtable accessor functions for GB pages
Date: Sat, 19 Jan 2008 07:48:32 +0100 (CET) [thread overview]
Message-ID: <20080119064832.786F614EAD@wotan.suse.de> (raw)
In-Reply-To: <20080119748.170864000@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
---
include/asm-x86/pgtable_64.h | 6 ++++++
1 file changed, 6 insertions(+)
Index: linux/include/asm-x86/pgtable_64.h
===================================================================
--- linux.orig/include/asm-x86/pgtable_64.h
+++ linux/include/asm-x86/pgtable_64.h
@@ -208,6 +208,12 @@ 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))
next prev parent reply other threads:[~2008-01-19 6:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-19 6:48 [PATCH] [0/8] GBpages support for x86-64, v2 Andi Kleen
2008-01-19 6:48 ` [PATCH] [1/8] Handle kernel near memory hole in clear_kernel_mapping Andi Kleen
2008-01-19 6:48 ` [PATCH] [2/8] GBPAGES: Add feature macros for the gbpages cpuid bit Andi Kleen
2008-01-23 21:26 ` Jan Engelhardt
2008-01-24 6:57 ` Andi Kleen
2008-01-19 6:48 ` [PATCH] [3/8] GBPAGES: Split LARGE_PAGE_SIZE/MASK into PUD_PAGE_SIZE/PMD_PAGE_SIZE Andi Kleen
2008-01-19 6:48 ` Andi Kleen [this message]
2008-01-19 6:48 ` [PATCH] [5/8] GBPAGES: Support gbpages in pagetable dump Andi Kleen
2008-01-19 6:48 ` [PATCH] [6/8] Add an option to disable direct mapping gbpages and a global variable Andi Kleen
2008-01-19 6:48 ` [PATCH] [7/8] CPA: Implement GBpages support in change_page_attr() Andi Kleen
2008-01-19 18:53 ` Ingo Molnar
2008-01-19 19:27 ` Andi Kleen
2008-01-19 6:48 ` [PATCH] [8/8] GBPAGES: Do kernel direct mapping at boot using GB pages Andi Kleen
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