diff options
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 9 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 7 |
2 files changed, 11 insertions, 5 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index e087a2e..fdca231 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -12,9 +12,7 @@ #include <asm/thread_info.h> #include <asm/memory.h> #include <asm/page.h> -#ifdef CONFIG_DEBUG_RODATA #include <asm/pgtable.h> -#endif #define PROC_INFO \ . = ALIGN(4); \ @@ -320,6 +318,13 @@ SECTIONS } /* + * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will + * be the first section-aligned location after __start_rodata. Otherwise, + * it will be equal to __start_rodata. + */ +__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT); + +/* * These must never be empty * If you have to comment these two assert statements out, your * binutils is too old (for other reasons as well) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 53f4250..370581a 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -582,6 +582,9 @@ struct section_perm { pmdval_t clear; }; +/* First section-aligned location at or after __start_rodata. */ +extern char __start_rodata_section_aligned[]; + static struct section_perm nx_perms[] = { /* Make pages tables, etc before _stext RW (set NX). */ { @@ -599,16 +602,14 @@ static struct section_perm nx_perms[] = { .mask = ~PMD_SECT_XN, .prot = PMD_SECT_XN, }, -#ifdef CONFIG_DEBUG_ALIGN_RODATA /* Make rodata NX (set RO in ro_perms below). */ { .name = "rodata NX", - .start = (unsigned long)__start_rodata, + .start = (unsigned long)__start_rodata_section_aligned, .end = (unsigned long)__init_begin, .mask = ~PMD_SECT_XN, .prot = PMD_SECT_XN, }, -#endif }; static struct section_perm ro_perms[] = { |