From: Tianyu Lan Sent: Thursday, September 20, 2018 7:30 AM
> On 9/20/2018 12:08 AM, Michael Kelley (EOSG) wrote:
> > From: Tianyu Lan Sent: Monday, September 17, 2018 8:19 PM
> >> +
> >> + if (ret && kvm_available_flush_tlb_with_range()) {
> >> + kvm_flush_remote_tlbs_with_address(kvm,
> >> + gfn_start,
> >> + gfn_end - gfn_start);
> >
> > Does the above need to be gfn_end - gfn_start + 1?
>
> The flush range depends on the input parameter frame start and frame end
> of for_each_slot_rmap_range().
>
> for_each_slot_rmap_range(memslot, PT_PAGE_TABLE_LEVEL,
> PT_MAX_HUGEPAGE_LEVEL,
> gfn_start, gfn_end - 1,
> &iterator)
> ret |= handler(kvm, iterator.rmap, memslot,
> iterator.gfn, iterator.level, data);
>
>
> The start is "gfn_start" and the end is "gfn_end - 1". The flush size is
> (gfn_end - 1) - gfn_start + 1 = gfn_end - gfn_start.
>
Got it. I agree.
Michael
