diff options
Diffstat (limited to 'arch/riscv/mm/init.c')
| -rw-r--r-- | arch/riscv/mm/init.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index fe8e159394d8ee..9940171c79f004 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -24,6 +24,7 @@ #include <linux/elf.h> #endif #include <linux/kfence.h> +#include <linux/execmem.h> #include <asm/fixmap.h> #include <asm/io.h> @@ -231,7 +232,7 @@ static void __init setup_bootmem(void) * In 64-bit, any use of __va/__pa before this point is wrong as we * did not know the start of DRAM before. */ - if (IS_ENABLED(CONFIG_64BIT)) + if (IS_ENABLED(CONFIG_64BIT) && IS_ENABLED(CONFIG_MMU)) kernel_map.va_pa_offset = PAGE_OFFSET - phys_ram_base; /* @@ -1481,3 +1482,37 @@ void __init pgtable_cache_init(void) preallocate_pgd_pages_range(MODULES_VADDR, MODULES_END, "bpf/modules"); } #endif + +#ifdef CONFIG_EXECMEM +#ifdef CONFIG_MMU +static struct execmem_info execmem_info __ro_after_init; + +struct execmem_info __init *execmem_arch_setup(void) +{ + execmem_info = (struct execmem_info){ + .ranges = { + [EXECMEM_DEFAULT] = { + .start = MODULES_VADDR, + .end = MODULES_END, + .pgprot = PAGE_KERNEL, + .alignment = 1, + }, + [EXECMEM_KPROBES] = { + .start = VMALLOC_START, + .end = VMALLOC_END, + .pgprot = PAGE_KERNEL_READ_EXEC, + .alignment = 1, + }, + [EXECMEM_BPF] = { + .start = BPF_JIT_REGION_START, + .end = BPF_JIT_REGION_END, + .pgprot = PAGE_KERNEL, + .alignment = PAGE_SIZE, + }, + }, + }; + + return &execmem_info; +} +#endif /* CONFIG_MMU */ +#endif /* CONFIG_EXECMEM */ |