1 files changed, 2 insertions, 1 deletions

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 1d9bfaff60bc..658ebf645f42 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -28,7 +28,8 @@ static void __init zone_sizes_init(void)
         unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, };
 
 #ifdef CONFIG_ZONE_DMA32
-        max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G, max_low_pfn));
+        max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G,
+                        (unsigned long) PFN_PHYS(max_low_pfn)));
 #endif
         max_zone_pfns[ZONE_NORMAL] = max_low_pfn;