[PATCH v2 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper
Jarkko Sakkinen
jarkko.sakkinen at linux.intel.com
Thu Jul 23 11:51:27 AEST 2020
On Thu, Jul 16, 2020 at 06:49:09PM +0200, Christophe Leroy wrote:
> Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com> a écrit :
>
> > Rename module_alloc() to text_alloc() and module_memfree() to
> > text_memfree(), and move them to kernel/text.c, which is unconditionally
> > compiled to the kernel proper. This allows kprobes, ftrace and bpf to
> > allocate space for executable code without requiring to compile the modules
> > support (CONFIG_MODULES=y) in.
>
> You are not changing enough in powerpc to have this work.
> On powerpc 32 bits (6xx), when STRICT_KERNEL_RWX is selected, the vmalloc
> space is set to NX (no exec) at segment level (ie by 256Mbytes zone) unless
> CONFIG_MODULES is selected.
>
> Christophe
This has been deduced down to:
https://lore.kernel.org/lkml/20200717030422.679972-1-jarkko.sakkinen@linux.intel.com/
I.e. not intruding PPC anymore :-)
/Jarkko
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