#ifndef __ASSEMBLY__
-#include <linux/jump_label.h>
-
-extern struct static_key_false disable_kuap_key;
-
#ifdef CONFIG_PPC_KUAP
#include <linux/sched.h>
#define KUAP_NONE (~0UL)
#define KUAP_ALL (~1UL)
-static __always_inline bool kuap_is_disabled(void)
-{
- return static_branch_unlikely(&disable_kuap_key);
-}
-
static inline void kuap_lock_one(unsigned long addr)
{
mtsr(mfsr(addr) | SR_KS, addr);
#ifdef CONFIG_PPC_KUAP
-static __always_inline bool kuap_is_disabled(void)
-{
- return !mmu_has_feature(MMU_FTR_KUAP);
-}
-
static inline void kuap_user_restore(struct pt_regs *regs)
{
bool restore_amr = false, restore_iamr = false;
#define KUAP_WRITE 2
#define KUAP_READ_WRITE (KUAP_READ | KUAP_WRITE)
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
+static __always_inline bool kuap_is_disabled(void);
+#endif
+
#ifdef CONFIG_PPC_BOOK3S_64
#include <asm/book3s/64/kup.h>
#endif
#ifdef CONFIG_PPC_KUAP
void setup_kuap(bool disabled);
+
+static __always_inline bool kuap_is_disabled(void)
+{
+ return !mmu_has_feature(MMU_FTR_KUAP);
+}
#else
static inline void setup_kuap(bool disabled) { }
#ifndef __ASSEMBLY__
-#include <linux/jump_label.h>
-
#include <asm/reg.h>
-extern struct static_key_false disable_kuap_key;
-
-static __always_inline bool kuap_is_disabled(void)
-{
- return static_branch_unlikely(&disable_kuap_key);
-}
-
static inline void __kuap_save_and_lock(struct pt_regs *regs)
{
regs->kuap = mfspr(SPRN_MD_AP);
#else
-#include <linux/jump_label.h>
#include <linux/sched.h>
#include <asm/reg.h>
-extern struct static_key_false disable_kuap_key;
-
-static __always_inline bool kuap_is_disabled(void)
-{
- return static_branch_unlikely(&disable_kuap_key);
-}
-
static inline void __kuap_lock(void)
{
mtspr(SPRN_PID, 0);
t->cpu_features |= old.cpu_features & CPU_FTR_PMAO_BUG;
}
+ /* Set kuap ON at startup, will be disabled later if cmdline has 'nosmap' */
+ if (IS_ENABLED(CONFIG_PPC_KUAP) && IS_ENABLED(CONFIG_PPC32))
+ t->mmu_features |= MMU_FTR_KUAP;
+
*PTRRELOC(&cur_cpu_spec) = &the_cpu_spec;
/*
#include <asm/kup.h>
#include <asm/smp.h>
-struct static_key_false disable_kuap_key;
-EXPORT_SYMBOL(disable_kuap_key);
-
void kuap_lock_all_ool(void)
{
kuap_lock_all();
return;
if (disabled)
- static_branch_enable(&disable_kuap_key);
+ cur_cpu_spec->mmu_features &= ~MMU_FTR_KUAP;
else
pr_info("Activating Kernel Userspace Access Protection\n");
}
setup_kup();
+ update_mmu_feature_fixups(MMU_FTR_KUAP);
+
/* Shortly after that, the entire linear mapping will be available */
memblock_set_current_limit(lowmem_end_addr);
}
#include <linux/export.h>
#include <linux/init.h>
-#include <linux/jump_label.h>
#include <linux/printk.h>
#include <linux/smp.h>
#include <asm/smp.h>
#ifdef CONFIG_PPC_KUAP
-struct static_key_false disable_kuap_key;
-EXPORT_SYMBOL(disable_kuap_key);
-
void setup_kuap(bool disabled)
{
if (disabled) {
if (IS_ENABLED(CONFIG_40x))
disable_kuep = true;
if (smp_processor_id() == boot_cpuid)
- static_branch_enable(&disable_kuap_key);
+ cur_cpu_spec->mmu_features &= ~MMU_FTR_KUAP;
return;
}