diff options
| -rw-r--r-- | arch/riscv/mm/init.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 7d59516ce6b3..bb0028c07ef3 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -673,10 +673,11 @@ void __init create_pgd_mapping(pgd_t *pgdp, static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size) { /* Upgrade to PMD_SIZE mappings whenever possible */ - if ((base & (PMD_SIZE - 1)) || (size & (PMD_SIZE - 1))) - return PAGE_SIZE; + base &= PMD_SIZE - 1; + if (!base && size >= PMD_SIZE) + return PMD_SIZE; - return PMD_SIZE; + return PAGE_SIZE; } #ifdef CONFIG_XIP_KERNEL @@ -1111,9 +1112,9 @@ static void __init setup_vm_final(void) if (end >= __pa(PAGE_OFFSET) + memory_limit) end = __pa(PAGE_OFFSET) + memory_limit; - map_size = best_map_size(start, end - start); for (pa = start; pa < end; pa += map_size) { va = (uintptr_t)__va(pa); + map_size = best_map_size(pa, end - pa); create_pgd_mapping(swapper_pg_dir, va, pa, map_size, pgprot_from_va(va)); |