[PATCHv2] arm64: Fix R/O permissions in mark_rodata_ro
catalin.marinas at arm.com
Wed Nov 18 04:14:50 PST 2015
On Thu, Nov 12, 2015 at 12:21:10PM -0800, Laura Abbott 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.
> 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 <labbott at fedoraproject.org>
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