[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 8/9] xen/arm: Implement hypercall for dirty page tracing
On Fri, 2013-10-18 at 13:17 +0900, Jaeyong Yoo wrote: > > I meant the pte frobbing immediately before the call the add_mapped_vaddr > > quoted above. > > > > I don't think it is necessary because at the moment the dirty bitmap > is constructed based on the VAs in the linked list. If the PTE frobbing > happens > immediately before add_mapped_vaddr, the corresponding dirty-page would be > checked at the next round get-dirty-gitmap. OK, thanks. Can we get a code comment on the ordering constraints here please. > > > Now, I start thinking of using bitmap rather than linked list, and I think > it > is similar there. The critical section would be the one that writes into the > bitmap and the one that reads the bitmap (copy to the bitmap from > toolstack). > > Jaeyong > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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