Re: [PATCH] arm64: move kimage_vaddr to .rodata

[Remi Denis-Courmont]

Le 2020-03-12 18:40, Mark Rutland a ÃcritÂ:
> On Thu, Mar 12, 2020 at 11:40:02AM +0200, RÃmi Denis-Courmont wrote:
> > From: Remi Denis-Courmont <remi.denis.courmont@xxxxxxxxxx>
> >
> > This datum is not referenced from .idmap.text: it does not need to be
> > mapped in idmap. Lets move it to .rodata as it is never written to 
> > after
> > early boot of the primary CPU.
> > (Maybe .data.ro_after_init would be cleaner though?)
>
> Can we move this into arch/arm64/mm/mmu.c, where we already have
> kimage_voffset:
>
> | u64 kimage_voffset __ro_after_init;
> | EXPORT_SYMBOL(kimage_voffset);
>
> ... or is it not possible to initialize kimage_vaddr correctly in C?

Good question... I'll check tomorrow.

--
RÃmi Denis-Courmont