Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH 3/3] powerpc/mm: Implement CONFIG_DEBUG_RODATA on PPC32 | Date | Thu, 20 Apr 2017 00:01:39 +1000 |
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Christophe Leroy <christophe.leroy@c-s.fr> writes:
> diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c > index 32509de6ce4c..4af81fb23653 100644 > --- a/arch/powerpc/kernel/ftrace.c > +++ b/arch/powerpc/kernel/ftrace.c > @@ -526,7 +526,9 @@ void ftrace_replace_code(int enable) > */ > void arch_ftrace_update_code(int command) > { > + set_kernel_text_rw(); > ftrace_modify_all_code(command); > + set_kernel_text_ro(); > }
I'm not sure that's the right place for that.
If you look at other arches they hook into ftrace_modify_code(), where you have the address that's being modified.
cheers
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