[PATCH v2 22/23] x86: use asm-generic/mmu_context.h for no-op implementations

Nicholas Piggin
2020-08-26T14:55:40Z

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/x86/include/asm/mmu_context.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index d98016b83755..36afcbea6a9f 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -91,12 +91,14 @@ static inline void switch_ldt(struct mm_struct *prev, struct mm_struct *next)
}
#endif

+#define enter_lazy_tlb enter_lazy_tlb
extern void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk);

/*
* Init a new mm. Used on mm copies, like at fork()
* and on mm's that are brand-new, like at execve().
*/
+#define init_new_context init_new_context
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
@@ -116,6 +118,8 @@ static inline int init_new_context(struct task_struct *tsk,
init_new_context_ldt(mm);
return 0;
}
+
+#define destroy_context destroy_context
static inline void destroy_context(struct mm_struct *mm)
{
destroy_context_ldt(mm);
@@ -214,4 +218,6 @@ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,

unsigned long __get_current_cr3_fast(void);

+#include <asm-generic/mmu_context.h>
+
#endif /* _ASM_X86_MMU_CONTEXT_H */
--
2.23.0