From: Angelo Dureghello <angelo@kernel-space.org>
Date: Sun, 28 Feb 2021 19:08:28 +0000 (+0100)
Subject: m68k: fix flatmem memory model setup
X-Git-Tag: xarray-5.18~2153^2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d2bd44c4c05d043fb65cfdf26c54e6d8b94a4b41;p=users%2Fwilly%2Fxarray.git

m68k: fix flatmem memory model setup

Detected a broken boot on mcf54415, likely introduced from

commit 4bfc848e0981
("m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM")

Fix ARCH_PFN_OFFSET to be a pfn.

Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
---

diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 9e8f0cc30a2c..2411ea9ef578 100644
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -167,7 +167,7 @@ static inline __attribute_const__ int __virt_to_node_shift(void)
 	((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn;		\
 })
 #else
-#define ARCH_PFN_OFFSET (m68k_memory[0].addr)
+#define ARCH_PFN_OFFSET (m68k_memory[0].addr >> PAGE_SHIFT)
 #include <asm-generic/memory_model.h>
 #endif