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| author | Johannes Weiner <jw@emlix.com> | 2009-03-04 16:21:31 +0100 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2009-04-02 23:41:50 -0700 |
| commit | e5083a63b6a8546c5fe1e571fe529e3939787ec2 (patch) | |
| tree | 5c11db5b0a924f8bcfc404c202630d37ccfd7c3c /arch/xtensa/include/asm/pgtable.h | |
| parent | 7789f89af9e8e426d7a7f173cf465a4fcadba7dd (diff) | |
| download | blackbird-obmc-linux-e5083a63b6a8546c5fe1e571fe529e3939787ec2.tar.gz blackbird-obmc-linux-e5083a63b6a8546c5fe1e571fe529e3939787ec2.zip | |
xtensa: nommu support
Add support for !CONFIG_MMU setups.
Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/include/asm/pgtable.h')
| -rw-r--r-- | arch/xtensa/include/asm/pgtable.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 8014d96b21f1..a138770c358e 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -183,7 +183,15 @@ extern unsigned long empty_zero_page[1024]; #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) +#ifdef CONFIG_MMU extern pgd_t swapper_pg_dir[PAGE_SIZE/sizeof(pgd_t)]; +extern void paging_init(void); +extern void pgtable_cache_init(void); +#else +# define swapper_pg_dir NULL +static inline void paging_init(void) { } +static inline void pgtable_cache_init(void) { } +#endif /* * The pmd contains the kernel virtual address of the pte page. @@ -383,8 +391,6 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) #else -extern void paging_init(void); - #define kern_addr_valid(addr) (1) extern void update_mmu_cache(struct vm_area_struct * vma, @@ -398,9 +404,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma, #define io_remap_pfn_range(vma,from,pfn,size,prot) \ remap_pfn_range(vma, from, pfn, size, prot) - -extern void pgtable_cache_init(void); - typedef pte_t *pte_addr_t; #endif /* !defined (__ASSEMBLY__) */ |
