riscv: Mark some global variables __ro_after_init

All of these are never modified after init, so they can be
__ro_after_init.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 3de7ec030342..9914ca0d789b 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -162,17 +162,17 @@ void __init setup_bootmem(void)
 }
 
 #ifdef CONFIG_MMU
-static struct pt_alloc_ops pt_ops;
+static struct pt_alloc_ops pt_ops __ro_after_init;
 
 /* Offset between linear mapping virtual address and kernel load address */
-unsigned long va_pa_offset;
+unsigned long va_pa_offset __ro_after_init;
 EXPORT_SYMBOL(va_pa_offset);
 #ifdef CONFIG_64BIT
 /* Offset between kernel mapping virtual address and kernel load address */
 unsigned long va_kernel_pa_offset;
 EXPORT_SYMBOL(va_kernel_pa_offset);
 #endif
-unsigned long pfn_base;
+unsigned long pfn_base __ro_after_init;
 EXPORT_SYMBOL(pfn_base);
 
 pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;