On Tue, May 14, 2024 at 4:05 PM Björn Töpel <bjorn@xxxxxxxxxx> wrote:
>
> From: Björn Töpel <bjorn@xxxxxxxxxxxx>
>
> Add a parameter to the direct map setup function, so it can be used in
> arch_add_memory() later.
>
> Signed-off-by: Björn Töpel <bjorn@xxxxxxxxxxxx>
> ---
> arch/riscv/mm/init.c | 15 ++++++---------
> 1 file changed, 6 insertions(+), 9 deletions(-)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index c969427eab88..6f72b0b2b854 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -1227,7 +1227,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
> }
>
> static void __meminit create_linear_mapping_range(phys_addr_t start, phys_addr_t end,
> - uintptr_t fixed_map_size)
> + uintptr_t fixed_map_size, const pgprot_t *pgprot)
> {
> phys_addr_t pa;
> uintptr_t va, map_size;
> @@ -1238,7 +1238,7 @@ static void __meminit create_linear_mapping_range(phys_addr_t start, phys_addr_t
> best_map_size(pa, va, end - pa);
>
> create_pgd_mapping(swapper_pg_dir, va, pa, map_size,
> - pgprot_from_va(va));
> + pgprot ? *pgprot : pgprot_from_va(va));
> }
> }
>
> @@ -1282,22 +1282,19 @@ static void __init create_linear_mapping_page_table(void)
> if (end >= __pa(PAGE_OFFSET) + memory_limit)
> end = __pa(PAGE_OFFSET) + memory_limit;
>
> - create_linear_mapping_range(start, end, 0);
> + create_linear_mapping_range(start, end, 0, NULL);
> }
>
> #ifdef CONFIG_STRICT_KERNEL_RWX
> - create_linear_mapping_range(ktext_start, ktext_start + ktext_size, 0);
> - create_linear_mapping_range(krodata_start,
> - krodata_start + krodata_size, 0);
> + create_linear_mapping_range(ktext_start, ktext_start + ktext_size, 0, NULL);
> + create_linear_mapping_range(krodata_start, krodata_start + krodata_size, 0, NULL);
>
> memblock_clear_nomap(ktext_start, ktext_size);
> memblock_clear_nomap(krodata_start, krodata_size);
> #endif
>
> #ifdef CONFIG_KFENCE
> - create_linear_mapping_range(kfence_pool,
> - kfence_pool + KFENCE_POOL_SIZE,
> - PAGE_SIZE);
> + create_linear_mapping_range(kfence_pool, kfence_pool + KFENCE_POOL_SIZE, PAGE_SIZE, NULL);
>
> memblock_clear_nomap(kfence_pool, KFENCE_POOL_SIZE);
> #endif
> --
> 2.40.1
>
You can add:
Reviewed-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
Thanks,
Alex
