• Arjan van de Ven's avatar
    x86: add testcases for RODATA and NX protections/attributes · edeed305
    Arjan van de Ven authored
    Latest update; I now have 4 NX tests, but 2 fail so they're #if 0'd.
    I also cleaned up the NX test code quite a bit, and got rid of the ugly
    exception table sorting stuff.
    
    From: Arjan van de Ven <arjan@linux.intel.com>
    
    This patch adds testcases for the CONFIG_DEBUG_RODATA configuration option
    as well as the NX CPU feature/mappings. Both testcases can move to tests/
    once that patch gets merged into mainline.
    (I'm half considering moving the rodata test into mm/init.c but I'll
    wait with that until init.c is unified)
    
    As part of this I had to fix a not-quite-right alignment in the vmlinux.lds.h
    for the RODATA sections, which lead to 1 page less being marked read only.
    Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    edeed305
test_nx.c 4.59 KB