diff options
Diffstat (limited to 'arch/sparc/mm')
| -rw-r--r-- | arch/sparc/mm/init_32.c | 20 | ||||
| -rw-r--r-- | arch/sparc/mm/init_64.c | 3 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c index 1e9f577f084d..d88e774c8eb4 100644 --- a/arch/sparc/mm/init_32.c +++ b/arch/sparc/mm/init_32.c @@ -302,3 +302,23 @@ void sparc_flush_page_to_ram(struct page *page) __flush_page_to_ram(vaddr); } EXPORT_SYMBOL(sparc_flush_page_to_ram); + +static const pgprot_t protection_map[16] = { + [VM_NONE] = PAGE_NONE, + [VM_READ] = PAGE_READONLY, + [VM_WRITE] = PAGE_COPY, + [VM_WRITE | VM_READ] = PAGE_COPY, + [VM_EXEC] = PAGE_READONLY, + [VM_EXEC | VM_READ] = PAGE_READONLY, + [VM_EXEC | VM_WRITE] = PAGE_COPY, + [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY, + [VM_SHARED] = PAGE_NONE, + [VM_SHARED | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_WRITE] = PAGE_SHARED, + [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED, + [VM_SHARED | VM_EXEC] = PAGE_READONLY, + [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED, + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED +}; +DECLARE_VM_GET_PAGE_PROT diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index f6174df2d5af..d6faee23c77d 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -2634,6 +2634,9 @@ void vmemmap_free(unsigned long start, unsigned long end, } #endif /* CONFIG_SPARSEMEM_VMEMMAP */ +/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */ +static pgprot_t protection_map[16] __ro_after_init; + static void prot_init_common(unsigned long page_none, unsigned long page_shared, unsigned long page_copy, |