> On Fri, Oct 21, 2016 at 10:25:21AM -0700, Dave Hansen wrote: > > On 10/20/2016 11:24 PM, Liang Li wrote: > > > Dave Hansen suggested a new scheme to encode the data structure, > > > because of additional complexity, it's not implemented in v3. > > > > So, what do you want done with this patch set? Do you want it applied > > as-is so that we can introduce a new host/guest ABI that we must > > support until the end of time? Then, we go back in a year or two and > > add the newer format that addresses the deficiencies that this ABI has > > with a third version? > > > > Exactly my questions. Hi Dave & Michael, In the V2, both of you thought that the memory I allocated for the bitmap is too large, and gave some suggestions about the solution, so I changed the implementation and used scattered pages for the bitmap instead of a large physical continued memory. I didn't get the comments about the changes, so I am not sure whether that is OK or not, that's the why I resend the V3, I just want your opinions about that part. I will implement the new schema as Dave suggested in V4. Before that, could you take a look at this version and give some comments? Thanks! Liang -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href