uml: stop specially protecting kernel stacks
Map all of physical memory as executable to avoid having to change stack
protections during fork and exit.
unprotect_stack is now called only from MODE_TT code, so it is marked as such.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 5ee7e85..8aeac4d 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -105,7 +105,7 @@
offset = uml_reserved - uml_physmem;
err = os_map_memory((void *) uml_reserved, physmem_fd, offset,
- len - offset, 1, 1, 0);
+ len - offset, 1, 1, 1);
if(err < 0){
os_print_error(err, "Mapping memory");
exit(1);