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    Subject[PATCH 18/29] arm64: Move EXCEPTION_TABLE to RO_DATA segment
    Date
    The EXCEPTION_TABLE is read-only, so collapse it into RO_DATA.

    Signed-off-by: Kees Cook <keescook@chromium.org>
    ---
    arch/arm64/kernel/vmlinux.lds.S | 6 ++++--
    1 file changed, 4 insertions(+), 2 deletions(-)

    diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
    index 81d94e371c95..c6ba2eee0ee8 100644
    --- a/arch/arm64/kernel/vmlinux.lds.S
    +++ b/arch/arm64/kernel/vmlinux.lds.S
    @@ -5,6 +5,8 @@
    * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
    */

    +#define RO_DATA_EXCEPTION_TABLE_ALIGN 8
    +
    #include <asm-generic/vmlinux.lds.h>
    #include <asm/cache.h>
    #include <asm/kernel-pgtable.h>
    @@ -135,8 +137,8 @@ SECTIONS
    . = ALIGN(SEGMENT_ALIGN);
    _etext = .; /* End of text section */

    - RO_DATA(PAGE_SIZE) /* everything from this point to */
    - EXCEPTION_TABLE(8) /* __init_begin will be marked RO NX */
    + /* everything from this point to __init_begin will be marked RO NX */
    + RO_DATA(PAGE_SIZE)

    . = ALIGN(PAGE_SIZE);
    idmap_pg_dir = .;
    --
    2.17.1
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