Le 08/06/2021 à 16:53, Souptick Joarder a écrit :

On Tue, Jun 8, 2021 at 1:56 PM Kefeng Wang [off-list ref] wrote:

quoted

Add setup_initial_init_mm() helper to setup kernel text,
data and brk.

Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-csky@vger.kernel.org
Cc: uclinux-h8-devel@lists.sourceforge.jp
Cc: linux-m68k@lists.linux-m68k.org
Cc: openrisc@lists.librecores.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-sh@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: x86@kernel.org
Signed-off-by: Kefeng Wang <redacted>
---
  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@huawei.com/#2696253

Christophe