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authorArnd Bergmann <arnd@arndb.de>2012-01-09 16:01:00 +0000
committerArnd Bergmann <arnd@arndb.de>2012-01-09 16:01:00 +0000
commita07613a54d700a974f3a4a657da78ef5d097315d (patch)
treee4bc91713e02fa6d8f08b07de53ea8f905593dfa /arch/arm/include/asm/pgalloc.h
parent65db039bf7402f0a5b19cbf6dcff55ebea433b8b (diff)
parent928a11ba36f999436915ea2b1eadf54301f93059 (diff)
Merge branch 'samsung/dt' into samsung/cleanup
Conflicts: arch/arm/mach-s3c64xx/Makefile arch/arm/mach-s5pc100/Makefile arch/arm/mach-s5pv210/Makefile Pull in previously resolved conflicts: The Makefiles were reorganized in the "rmk/restart" series and modified in the "samsung/cleanup series". This also pulls in the other conflict resolutions from the restart series against the samsung/dt series. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/include/asm/pgalloc.h')
-rw-r--r--arch/arm/include/asm/pgalloc.h26
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index 3e08fd3fbb6..943504f53f5 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -25,12 +25,34 @@
#define _PAGE_USER_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_USER))
#define _PAGE_KERNEL_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_KERNEL))
+#ifdef CONFIG_ARM_LPAE
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+ return (pmd_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
+}
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+ BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
+ free_page((unsigned long)pmd);
+}
+
+static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+ set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE));
+}
+
+#else /* !CONFIG_ARM_LPAE */
+
/*
* Since we have only two-level page tables, these are trivial
*/
#define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(mm, pmd) do { } while (0)
-#define pgd_populate(mm,pmd,pte) BUG()
+#define pud_populate(mm,pmd,pte) BUG()
+
+#endif /* CONFIG_ARM_LPAE */
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
@@ -109,7 +131,9 @@ static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte,
{
pmdval_t pmdval = (pte + PTE_HWTABLE_OFF) | prot;
pmdp[0] = __pmd(pmdval);
+#ifndef CONFIG_ARM_LPAE
pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
+#endif
flush_pmd_entry(pmdp);
}