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

[linux-2.6-microblaze.git] / arch / um / kernel / mem.c

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 276a1f0..38d5a71 100644 (file)
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -216,3 +216,23 @@ void *uml_kmalloc(int size, int flags)
 {
        return kmalloc(size, flags);
 }
+
+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