#define _ASMARM_PGTABLE_H
#include <linux/const.h>
-#include <asm-generic/4level-fixup.h>
#include <asm/proc-fns.h>
#ifndef CONFIG_MMU
+#include <asm-generic/4level-fixup.h>
#include "pgtable-nommu.h"
#else
+#include <asm-generic/pgtable-nopud.h>
#include <asm/memory.h>
-#include <mach/vmalloc.h>
#include <asm/pgtable-hwdef.h>
+#ifdef CONFIG_ARM_LPAE
+#include <asm/pgtable-3level.h>
+#else
#include <asm/pgtable-2level.h>
+#endif
/*
* Just any arbitrary offset to the start of the vmalloc VM area: the
* any out-of-bounds memory accesses will hopefully be caught.
* The vmalloc() routines leaves a hole of 4kB between each vmalloced
* area for the same reason. ;)
- *
- * Note that platforms may override VMALLOC_START, but they must provide
- * VMALLOC_END. VMALLOC_END defines the (exclusive) limit of this space,
- * which may not overlap IO space.
*/
-#ifndef VMALLOC_START
#define VMALLOC_OFFSET (8*1024*1024)
#define VMALLOC_START (((unsigned long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
-#endif
+#define VMALLOC_END 0xff000000UL
#define LIBRARY_TEXT_START 0x0c000000
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-#define pgd_none(pgd) (0)
-#define pgd_bad(pgd) (0)
-#define pgd_present(pgd) (1)
-#define pgd_clear(pgdp) do { } while (0)
-#define set_pgd(pgd,pgdp) do { } while (0)
-#define set_pud(pud,pudp) do { } while (0)
-
-
-/* Find an entry in the second-level page table.. */
-#define pmd_offset(dir, addr) ((pmd_t *)(dir))
-
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_present(pmd) (pmd_val(pmd))
-#define pmd_bad(pmd) (pmd_val(pmd) & 2)
-
-#define copy_pmd(pmdpd,pmdps) \
- do { \
- pmdpd[0] = pmdps[0]; \
- pmdpd[1] = pmdps[1]; \
- flush_pmd_entry(pmdpd); \
- } while (0)
-
-#define pmd_clear(pmdp) \
- do { \
- pmdp[0] = __pmd(0); \
- pmdp[1] = __pmd(0); \
- clean_pmd_entry(pmdp); \
- } while (0)
static inline pte_t *pmd_page_vaddr(pmd_t pmd)
{
#define pmd_page(pmd) pfn_to_page(__phys_to_pfn(pmd_val(pmd) & PHYS_MASK))
-/* we don't need complex calculations here as the pmd is folded into the pgd */
-#define pmd_addr_end(addr,end) (end)
-
-
#ifndef CONFIG_HIGHPTE
#define __pte_map(pmd) pmd_page_vaddr(*(pmd))
#define __pte_unmap(pte) do { } while (0)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
#define mk_pte(page,prot) pfn_pte(page_to_pfn(page), prot)
-#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext)
#define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0)
+#define pte_none(pte) (!pte_val(pte))
+#define pte_present(pte) (pte_val(pte) & L_PTE_PRESENT)
+#define pte_write(pte) (!(pte_val(pte) & L_PTE_RDONLY))
+#define pte_dirty(pte) (pte_val(pte) & L_PTE_DIRTY)
+#define pte_young(pte) (pte_val(pte) & L_PTE_YOUNG)
+#define pte_exec(pte) (!(pte_val(pte) & L_PTE_XN))
+#define pte_special(pte) (0)
+
+#define pte_present_user(pte) \
+ ((pte_val(pte) & (L_PTE_PRESENT | L_PTE_USER)) == \
+ (L_PTE_PRESENT | L_PTE_USER))
+
#if __LINUX_ARM_ARCH__ < 6
static inline void __sync_icache_dcache(pte_t pteval)
{
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
- if (addr >= TASK_SIZE)
- set_pte_ext(ptep, pteval, 0);
- else {
+ unsigned long ext = 0;
+
+ if (addr < TASK_SIZE && pte_present_user(pteval)) {
__sync_icache_dcache(pteval);
- set_pte_ext(ptep, pteval, PTE_EXT_NG);
+ ext |= PTE_EXT_NG;
}
-}
-
-#define pte_none(pte) (!pte_val(pte))
-#define pte_present(pte) (pte_val(pte) & L_PTE_PRESENT)
-#define pte_write(pte) (!(pte_val(pte) & L_PTE_RDONLY))
-#define pte_dirty(pte) (pte_val(pte) & L_PTE_DIRTY)
-#define pte_young(pte) (pte_val(pte) & L_PTE_YOUNG)
-#define pte_exec(pte) (!(pte_val(pte) & L_PTE_XN))
-#define pte_special(pte) (0)
-#define pte_present_user(pte) \
- ((pte_val(pte) & (L_PTE_PRESENT | L_PTE_USER)) == \
- (L_PTE_PRESENT | L_PTE_USER))
+ set_pte_ext(ptep, pteval, ext);
+}
#define PTE_BIT_FUNC(fn,op) \
static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
* We provide our own arch_get_unmapped_area to cope with VIPT caches.
*/
#define HAVE_ARCH_UNMAPPED_AREA
+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
/*
* remap a physical page `pfn' of size `size' with page protection `prot'
#define pgtable_cache_init() do { } while (0)
-void identity_mapping_add(pgd_t *, unsigned long, unsigned long);
-void identity_mapping_del(pgd_t *, unsigned long, unsigned long);
-
#endif /* !__ASSEMBLY__ */
#endif /* CONFIG_MMU */
git.openpandora.org / pandora-kernel.git / blobdiff