Merge tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / arch / csky / mm / init.c

diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index bf2004a..bde7cab 100644 (file)
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -197,3 +197,23 @@ void __init fixaddr_init(void)
        vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
        fixrange_init(vaddr, vaddr + PMD_SIZE, swapper_pg_dir);
 }
+
+static const pgprot_t protection_map[16] = {
+       [VM_NONE]                                       = PAGE_NONE,
+       [VM_READ]                                       = PAGE_READ,
+       [VM_WRITE]                                      = PAGE_READ,
+       [VM_WRITE | VM_READ]                            = PAGE_READ,
+       [VM_EXEC]                                       = PAGE_READ,
+       [VM_EXEC | VM_READ]                             = PAGE_READ,
+       [VM_EXEC | VM_WRITE]                            = PAGE_READ,
+       [VM_EXEC | VM_WRITE | VM_READ]                  = PAGE_READ,
+       [VM_SHARED]                                     = PAGE_NONE,
+       [VM_SHARED | VM_READ]                           = PAGE_READ,
+       [VM_SHARED | VM_WRITE]                          = PAGE_WRITE,
+       [VM_SHARED | VM_WRITE | VM_READ]                = PAGE_WRITE,
+       [VM_SHARED | VM_EXEC]                           = PAGE_READ,
+       [VM_SHARED | VM_EXEC | VM_READ]                 = PAGE_READ,
+       [VM_SHARED | VM_EXEC | VM_WRITE]                = PAGE_WRITE,
+       [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ]      = PAGE_WRITE
+};
+DECLARE_VM_GET_PAGE_PROT