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SubjectRe: [v2] powerpc: fix boot on BOOK3S_32 with CONFIG_STRICT_KERNEL_RWX
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On Tue, 2017-11-21 at 14:28:20 UTC, Christophe Leroy wrote:
> On powerpc32, patch_instruction() is called by apply_feature_fixups()
> which is called from early_init()
>
> There is the following note in front of early_init():
> * Note that the kernel may be running at an address which is different
> * from the address that it was linked at, so we must use RELOC/PTRRELOC
> * to access static data (including strings). -- paulus
>
> Therefore, slab_is_available() cannot be called yet, and
> text_poke_area must be addressed with PTRRELOC()
>
> Fixes: 37bc3e5fd764f ("powerpc/lib/code-patching: Use alternate map
> for patch_instruction()")
> Reported-by: Meelis Roos <mroos@linux.ee>
> Cc: Balbir Singh <bsingharora@gmail.com>
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/252eb55816a6f69ef9464cad303cdb

cheers

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