linux-kernel - [PATCH v2 22/23] x86: use asm-generic/mmu

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Message-Id: <20200826145249.745432-23-npiggin@gmail.com>
Date:   Thu, 27 Aug 2020 00:52:48 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     linux-arch@...r.kernel.org
Cc:     Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Arnd Bergmann <arnd@...db.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v2 22/23] x86: use asm-generic/mmu_context.h for no-op implementations

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org
Cc: "H. Peter Anvin" <hpa@...or.com>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Signed-off-by: Nicholas Piggin <npiggin@...il.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