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Diffstat (limited to 'arch/x86/include/asm/mmu_context.h')
-rw-r--r--arch/x86/include/asm/mmu_context.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index af0251fc85ed..8e0a9fe86de4 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -108,7 +108,16 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
+ #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
+ if (cpu_feature_enabled(X86_FEATURE_OSPKE)) {
+ /* pkey 0 is the default and always allocated */
+ mm->context.pkey_allocation_map = 0x1;
+ /* -1 means unallocated or invalid */
+ mm->context.execute_only_pkey = -1;
+ }
+ #endif
init_new_context_ldt(tsk, mm);
+
return 0;
}
static inline void destroy_context(struct mm_struct *mm)
@@ -263,5 +272,4 @@ static inline bool arch_pte_access_permitted(pte_t pte, bool write)
{
return __pkru_allows_pkey(pte_flags_pkey(pte_flags(pte)), write);
}
-
#endif /* _ASM_X86_MMU_CONTEXT_H */