x86/mm/tlb: Add freed_tables element to flush_tlb_info

Pass the information on to native_flush_tlb_others.

No functional changes.

Cc: npiggin@gmail.com
Cc: mingo@kernel.org
Cc: will.deacon@arm.com
Cc: songliubraving@fb.com
Cc: kernel-team@fb.com
Cc: hpa@zytor.com
Cc: luto@kernel.org
Signed-off-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180926035844.1420-7-riel@surriel.com

arch/x86/include/asm/tlbflush.h

@@ -532,6 +532,7 @@ struct flush_tlb_info {
 	unsigned long		end;
 	u64			new_tlb_gen;
 	unsigned int		stride_shift;
+	bool			freed_tables;
 };
 
 #define local_flush_tlb() __flush_tlb()

arch/x86/mm/tlb.c

@@ -617,6 +617,7 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
 	struct flush_tlb_info info __aligned(SMP_CACHE_BYTES) = {
 		.mm = mm,
 		.stride_shift = stride_shift,
+		.freed_tables = freed_tables,
 	};
 
 	cpu = get_cpu();