modules: add ro_after_init support

Add ro_after_init support for modules by adding a new page-aligned section
in the module layout (after rodata) for ro_after_init data and enabling RO
protection for that section after module init runs.

Signed-off-by: Jessica Yu <jeyu@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Jessica Yu 2016-07-27 12:06:21 +09:30 • committed by Rusty Russell
commit 444d13ff10
4 changed files with 60 additions and 15 deletions