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authorBalbir Singh <bsingharora@gmail.com>2017-06-29 03:04:11 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2017-07-04 11:37:44 +1000
commit1e0fc9d1eb2b0241a03e0a02bcdb9b5b641b9d35 (patch)
tree30c28bcf67a505c954c6e28bef10ded1f4ae0d39 /certs/Makefile
parent7614ff3272a115a047139173cc04466e8132a1f2 (diff)
downloadlinux-1e0fc9d1eb2b0241a03e0a02bcdb9b5b641b9d35.tar.bz2
powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs
All code that patches kernel text has been moved over to using patch_instruction() and patch_instruction() is able to cope with the kernel text being read only. The linker script has been updated to ensure the read only data ends on a large page boundary, so it and the preceding kernel text can be marked R_X. We also have implementations of mark_rodata_ro() for Hash and Radix MMU modes. There are some corner-cases missing when the kernel is built relocatable, so for now make it depend on !RELOCATABLE. There's also a temporary workaround to depend on !HIBERNATION to avoid a build failure, that will be removed once we've merged with the PM tree. Signed-off-by: Balbir Singh <bsingharora@gmail.com> [mpe: Make it depend on !RELOCATABLE, munge change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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