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| author | Paul Mundt <lethal@linux-sh.org> | 2007-03-28 16:38:13 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@hera.kernel.org> | 2007-05-07 02:10:54 +0000 |
| commit | 01066625e9ae39742c92e21163f7f2a818e02762 (patch) | |
| tree | c5b8a2a2c9de29ed13094891fce2b7f5769ffca7 /include/asm-sh | |
| parent | 759ab068c4d4216c4ad247bfa851601dfb6500dc (diff) | |
| download | linux-01066625e9ae39742c92e21163f7f2a818e02762.tar.gz | |
sh: bootmem tidying for discontig/sparsemem preparation.
This reworks some of the node 0 bootmem initialization in preparation for discontigmem and sparsemem support. ARCH_POPULATES_NODE_MAP is switched to as a result of this. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/mmu_context.h | 6 | ||||
| -rw-r--r-- | include/asm-sh/page.h | 10 |
2 files changed, 9 insertions, 7 deletions
diff --git a/include/asm-sh/mmu_context.h b/include/asm-sh/mmu_context.h index 01acaaae9751..199662bb35c6 100644 --- a/include/asm-sh/mmu_context.h +++ b/include/asm-sh/mmu_context.h @@ -169,6 +169,8 @@ enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) #define destroy_context(mm) do { } while (0) #define set_asid(asid) do { } while (0) #define get_asid() (0) +#define set_TTB(pgd) do { } while (0) +#define get_TTB() (0) #define activate_context(mm,cpu) do { } while (0) #define switch_mm(prev,next,tsk) do { } while (0) #define deactivate_mm(tsk,mm) do { } while (0) @@ -211,8 +213,8 @@ static inline void disable_mmu(void) * MMU control handlers for processors lacking memory * management hardware. */ -#define enable_mmu() do { BUG(); } while (0) -#define disable_mmu() do { BUG(); } while (0) +#define enable_mmu() do { } while (0) +#define disable_mmu() do { } while (0) #endif #endif /* __KERNEL__ */ diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index ac4b4677f28c..7464de4ba07d 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -59,6 +59,7 @@ extern void (*clear_page)(void *to); extern void (*copy_page)(void *to, void *from); extern unsigned long shm_align_mask; +extern unsigned long max_low_pfn, min_low_pfn; #ifdef CONFIG_MMU extern void clear_page_slow(void *to); @@ -124,17 +125,16 @@ typedef struct { unsigned long pgd; } pgd_t; #define PAGE_OFFSET CONFIG_PAGE_OFFSET #define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) +#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) - -#define phys_to_page(phys) (mem_map + (((phys)-__MEMORY_START) >> PAGE_SHIFT)) -#define page_to_phys(page) (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START) +#define phys_to_page(phys) (pfn_to_page(phys >> PAGE_SHIFT)) +#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) /* PFN start number, because of __MEMORY_START */ #define PFN_START (__MEMORY_START >> PAGE_SHIFT) #define ARCH_PFN_OFFSET (PFN_START) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr) +#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ |