aboutsummaryrefslogtreecommitdiff
path: root/arch/s390/include/asm/mmu_context.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/include/asm/mmu_context.h')
-rw-r--r--arch/s390/include/asm/mmu_context.h18
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 69bdf72e95e..b749c573365 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -1,6 +1,4 @@
/*
- * include/asm-s390/mmu_context.h
- *
* S390 version
*
* Derived from "include/asm-i386/mmu_context.h"
@@ -13,7 +11,6 @@
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
#include <asm/ctl_reg.h>
-#include <asm-generic/mm_hooks.h>
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
@@ -60,7 +57,7 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk)
pgd_t *pgd = mm->pgd;
S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd);
- if (user_mode != HOME_SPACE_MODE) {
+ if (addressing_mode != HOME_SPACE_MODE) {
/* Load primary space page table origin. */
asm volatile(LCTL_OPCODE" 1,1,%0\n"
: : "m" (S390_lowcore.user_asce) );
@@ -93,4 +90,17 @@ static inline void activate_mm(struct mm_struct *prev,
switch_mm(prev, next, current);
}
+static inline void arch_dup_mmap(struct mm_struct *oldmm,
+ struct mm_struct *mm)
+{
+#ifdef CONFIG_64BIT
+ if (oldmm->context.asce_limit < mm->context.asce_limit)
+ crst_table_downgrade(mm, oldmm->context.asce_limit);
+#endif
+}
+
+static inline void arch_exit_mmap(struct mm_struct *mm)
+{
+}
+
#endif /* __S390_MMU_CONTEXT_H */