4.20-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 28198c4639b39899a728ac89aea29d2a7a72562f ]
max_low_pfn should be pfn_size not byte_size.
Signed-off-by: Guo Ren ren_guo@c-sky.com Signed-off-by: Mao Han mao_han@c-sky.com Signed-off-by: Palmer Dabbelt palmer@sifive.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/riscv/kernel/setup.c | 2 +- arch/riscv/mm/init.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 2c290e6aaa6e..6d652826b5cb 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -196,7 +196,7 @@ static void __init setup_bootmem(void) BUG_ON(mem_size == 0);
set_max_mapnr(PFN_DOWN(mem_size)); - max_low_pfn = memblock_end_of_DRAM(); + max_low_pfn = PFN_DOWN(memblock_end_of_DRAM());
#ifdef CONFIG_BLK_DEV_INITRD setup_initrd(); 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;