From: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx> commit 9804f8c69b04a39d0ba41d19e6bdc6aa91c19725 upstream zone_dma_bits's initialization happens earlier that it's actually needed, in arm64_memblock_init(). So move it into the more suitable zone_sizes_init(). Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx> Tested-by: Jeremy Linton <jeremy.linton@xxxxxxx> Link: https://lore.kernel.org/r/20201119175400.9995-3-nsaenzjulienne@xxxxxxx Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Jing Xiangfeng <jingxiangfeng@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/mm/init.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -190,6 +190,8 @@ static void __init zone_sizes_init(unsig unsigned long max_zone_pfns[MAX_NR_ZONES] = {0}; #ifdef CONFIG_ZONE_DMA + zone_dma_bits = ARM64_ZONE_DMA_BITS; + arm64_dma_phys_limit = max_zone_phys(zone_dma_bits); max_zone_pfns[ZONE_DMA] = PFN_DOWN(arm64_dma_phys_limit); #endif #ifdef CONFIG_ZONE_DMA32 @@ -376,11 +378,6 @@ void __init arm64_memblock_init(void) early_init_fdt_scan_reserved_mem(); - if (IS_ENABLED(CONFIG_ZONE_DMA)) { - zone_dma_bits = ARM64_ZONE_DMA_BITS; - arm64_dma_phys_limit = max_zone_phys(ARM64_ZONE_DMA_BITS); - } - if (IS_ENABLED(CONFIG_ZONE_DMA32)) arm64_dma32_phys_limit = max_zone_phys(32); else
