From: Takashi Iwai <tiwai@suse.de>
Subject: arch/arm64: Add a kABI placeholder for the future TLBI boradcast fixes
Patch-mainline: Never, kABI placeholder
References: bsc#1183030

This patch adds a kABI placeholder in mm_context_t for arm64 arch
so that we'll be able to backport the TLBI broadcast fixes later on.
The field is currently not used.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 arch/arm64/include/asm/mmu.h |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm64/include/asm/mmu.h
+++ b/arch/arm64/include/asm/mmu.h
@@ -24,6 +24,7 @@ typedef struct {
 	refcount_t	pinned;
 	void		*vdso;
 	unsigned long	flags;
+	atomic_t        nr_active_mm; /* just a kABI placeholder for now */
 } mm_context_t;
 
 /*