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authorKees Cook <keescook@chromium.org>2016-08-10 22:46:49 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2016-08-12 16:47:06 +0100
commit7619751f8c900fa5fdd76db06f4caf095c56de8e (patch)
treec4b0185d61b10af7b385e2c20cbe15137ac93097 /arch/arm
parentd782e426b835bd2e79d868eb4af8510ed79e0aee (diff)
downloadlinux-7619751f8c900fa5fdd76db06f4caf095c56de8e.tar.bz2
ARM: 8595/2: apply more __ro_after_init
Guided by grsecurity's analogous __read_only markings in arch/arm, this applies several uses of __ro_after_init to structures that are only updated during __init. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/kernel/cpuidle.c2
-rw-r--r--arch/arm/kernel/setup.c10
-rw-r--r--arch/arm/kernel/smp.c2
-rw-r--r--arch/arm/lib/delay.c2
-rw-r--r--arch/arm/mm/mmu.c2
5 files changed, 9 insertions, 9 deletions
diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c
index 7dccc964d75f..a3308ad1a024 100644
--- a/arch/arm/kernel/cpuidle.c
+++ b/arch/arm/kernel/cpuidle.c
@@ -19,7 +19,7 @@ extern struct of_cpuidle_method __cpuidle_method_of_table[];
static const struct of_cpuidle_method __cpuidle_method_of_table_sentinel
__used __section(__cpuidle_method_of_table_end);
-static struct cpuidle_ops cpuidle_ops[NR_CPUS];
+static struct cpuidle_ops cpuidle_ops[NR_CPUS] __ro_after_init;
/**
* arm_cpuidle_simple_enter() - a wrapper to cpu_do_idle()
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index df7f2a75e769..aca999e17184 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -114,19 +114,19 @@ EXPORT_SYMBOL(elf_hwcap2);
#ifdef MULTI_CPU
-struct processor processor __read_mostly;
+struct processor processor __ro_after_init;
#endif
#ifdef MULTI_TLB
-struct cpu_tlb_fns cpu_tlb __read_mostly;
+struct cpu_tlb_fns cpu_tlb __ro_after_init;
#endif
#ifdef MULTI_USER
-struct cpu_user_fns cpu_user __read_mostly;
+struct cpu_user_fns cpu_user __ro_after_init;
#endif
#ifdef MULTI_CACHE
-struct cpu_cache_fns cpu_cache __read_mostly;
+struct cpu_cache_fns cpu_cache __ro_after_init;
#endif
#ifdef CONFIG_OUTER_CACHE
-struct outer_cache_fns outer_cache __read_mostly;
+struct outer_cache_fns outer_cache __ro_after_init;
EXPORT_SYMBOL(outer_cache);
#endif
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 861521606c6d..937c8920d741 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -82,7 +82,7 @@ enum ipi_msg_type {
static DECLARE_COMPLETION(cpu_running);
-static struct smp_operations smp_ops;
+static struct smp_operations smp_ops __ro_after_init;
void __init smp_set_ops(const struct smp_operations *ops)
{
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index 8044591dca72..2cef11884857 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c
@@ -29,7 +29,7 @@
/*
* Default to the loop-based delay implementation.
*/
-struct arm_delay_ops arm_delay_ops = {
+struct arm_delay_ops arm_delay_ops __ro_after_init = {
.delay = __loop_delay,
.const_udelay = __loop_const_udelay,
.udelay = __loop_udelay,
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 62f4d01941f7..2396935e715c 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -243,7 +243,7 @@ __setup("noalign", noalign_setup);
#define PROT_PTE_S2_DEVICE PROT_PTE_DEVICE
#define PROT_SECT_DEVICE PMD_TYPE_SECT|PMD_SECT_AP_WRITE
-static struct mem_type mem_types[] = {
+static struct mem_type mem_types[] __ro_after_init = {
[MT_DEVICE] = { /* Strongly ordered / ARMv6 shared device */
.prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_SHARED |
L_PTE_SHARED,