On Tue, 2012-05-15 at 21:24 +0800, Alex Shi wrote:

Sorry. I don't understand what's the comments Peter's made days ago. I should ask for more details originally. 

So, Peter, the correct change should like following, am I right?

-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
+#define tlb_flush(tlb, start, end) __flush_tlb_range((tlb)->mm, start, end)

No.. the correct change is to do range tracking like the other archs
that support flush_tlb_range() do.

You do not modify the tlb interface.

Again, see: http://marc.info/?l=linux-arch&m=129952026504268&w=2