linux-kernel - [PATCH 5.11 31/41] m68k: fix flatmem memory model setup

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Date:   Mon, 26 Apr 2021 09:30:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Angelo Dureghello <angelo@...nel-space.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 31/41] m68k: fix flatmem memory model setup

From: Angelo Dureghello <angelo@...nel-space.org>

[ Upstream commit d2bd44c4c05d043fb65cfdf26c54e6d8b94a4b41 ]

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@...nel-space.org>
Acked-by: Mike Rapoport <rppt@...ux.ibm.com>
Signed-off-by: Greg Ungerer <gerg@...ux-m68k.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/m68k/include/asm/page_mm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 7f5912af2a52..21b1071e0a34 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
 
-- 
2.30.2