On 11/14/2015 11:38 PM, Ard Biesheuvel wrote:
On 12 November 2015 at 21:21, Laura Abbott <labb...@fedoraproject.org> wrote:
The permissions in mark_rodata_ro trigger a build error
with STRICT_MM_TYPECHECKS. Fix this by introducing
PAGE_KERNEL_ROX for the same reasons as PAGE_KERNEL_RO.
Forgive the bikeshedding but perhaps PAGE_KERNEL_EXEC_RO is more consistent?
powerpc was using PAGE_KERNEL_ROX so I went with that. Blame powerpc ;)
From Ard:
"PAGE_KERNEL_EXEC has PTE_WRITE set as well, making the range
writeable under the ARMv8.1 DBM feature, that manages the
dirty bit in hardware (writing to a page with the PTE_RDONLY
and PTE_WRITE bits both set will clear the PTE_RDONLY bit in that case)"
Signed-off-by: Laura Abbott <labb...@fedoraproject.org>
Acked-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
Thanks,
Laura
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
