[PATCH 3/3] sh: Call paging_init() earlier in the init sequence

From: Oreoluwa Babatunde
Date: Fri Feb 09 2024 - 19:33:02 EST

The unflatten_device_tree() function contains a call to
memblock_alloc(). This is a problem because this allocation is done
before any of the reserved memory is set aside in paging_init().
This means that there is a possibility for memblock to allocate from
any of the memory regions that are supposed to be set aside as reserved.

Hence, move the call to paging_init() to be earlier in the init
sequence so that the reserved memory regions are set aside before any
allocations are done using memblock.

Signed-off-by: Oreoluwa Babatunde <quic_obabatun@xxxxxxxxxxx>
arch/sh/kernel/setup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index d3175f0..ea40798 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -322,6 +322,8 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
sh_early_platform_driver_probe("earlyprintk", 1, 1);

+ paging_init();
@@ -330,8 +332,6 @@ void __init setup_arch(char **cmdline_p)

- paging_init();
/* Perform the machine specific initialisation */
if (likely(sh_mv.mv_setup))