[RFC PATCH V1 7/8] powerpc/mm: kasan: Add kasan support for ppc64

[Andrey Ryabinin]

2015-08-17 15:13 GMT+03:00 Andrey Ryabinin <ryabinin.a.a at gmail.com>:
>
> Did you disable stack instrumentation (in scripts/Makefile.kasa),
> or you version of gcc doesn't support it (e.g. like 4.9.x on x86) ?
>
> Because this can't work with stack instrumentation as you don't have shadow for stack in early code.
>
> But this should be doable, as I think. All you need is to setup shadow for init task's
> stack before executing any instrumented function.

And you also need to define CONFIG_KASAN_SHADOW_OFFSET, so it will be
passed to GCC
via -fasan-shadow-offset= option.