Re: [PATCH v3 resend 01/15] mm: add setup_initial_init_mm() helper

[Christophe Leroy]

Le 08/06/2021 à 16:53, Souptick Joarder a écrit :
> On Tue, Jun 8, 2021 at 1:56 PM Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:
> > Add setup_initial_init_mm() helper to setup kernel text,
> > data and brk.
> >
> > Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx
> > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> > Cc: linux-csky@xxxxxxxxxxxxxxx
> > Cc: uclinux-h8-devel@xxxxxxxxxxxxxxxxxxxx
> > Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
> > Cc: openrisc@xxxxxxxxxxxxxxxxxxxx
> > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
> > Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
> > Cc: linux-sh@xxxxxxxxxxxxxxx
> > Cc: linux-s390@xxxxxxxxxxxxxxx
> > Cc: x86@xxxxxxxxxx
> > Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
> > ---
> >   include/linux/mm.h | 3 +++
> >   mm/init-mm.c       | 9 +++++++++
> >   2 files changed, 12 insertions(+)
> >
> > diff --git a/include/linux/mm.h b/include/linux/mm.h
> > index c274f75efcf9..02aa057540b7 100644
> > --- a/include/linux/mm.h
> > +++ b/include/linux/mm.h
> > @@ -244,6 +244,9 @@ int __add_to_page_cache_locked(struct page *page, struct address_space *mapping,
> >
> >   #define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
> >
> > +void setup_initial_init_mm(void *start_code, void *end_code,
> > +                          void *end_data, void *brk);
> > +
>
> Gentle query -> is there any limitation to add inline functions in
> setup_arch() functions ?

Kefeng just followed comment from Mike I guess, see 
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20210604070633.32363-2-wangkefeng.wang@xxxxxxxxxx/#2696253

Christophe