On Fri, 8 Dec 2017 20:32:49 +0000 "Dr. David Alan Gilbert (git)" <dgilb...@redhat.com> wrote:
> From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> > > Hi, > This is an experimental set that reworks the way the vhost > code handles changes in physical address space layout that > came from a discussion with Igor. > > It's intention is to simplify a lot of the update code, > and to make it easier for the postcopy+shared code to > do the hugepage alignments that are needed. > > Instead of updating and trying to merge sections of address > space on each add/remove callback, we wait until the commit phase > and go through and rebuild a list by walking the Flatview of > memory and end up producing an ordered list. > We compare the list to the old list to trigger updates. > > This is pretty lightly tested (not least because I can't > get vhost-user+hot-add memory to survive even upstream). vhost kernel + hot-add should works (well that's at ales what I'm usually testing). vhost-user was lately failing 'make check' on me even without memhotplug, so I've disabled it in my builds for now. > v2 > Incorporate changes and code from Igor, in particular the simpler > ring verification checks and thus the removal of the complex > comparison code. > > Dave > > > Dr. David Alan Gilbert (8): > memory: address_space_iterate > vhost: Move log_dirty check > vhost: Simplify ring verification checks > vhost: New memory update functions > vhost: update_mem_cb implementation > vhost: Compare and copy updated region data into device state > vhost: Remove old vhost_set_memory etc > vhost: Move mem_sections maintenance into commit/update routines > > hw/virtio/trace-events | 7 + > hw/virtio/vhost.c | 504 > ++++++++++++++++------------------------------ > include/exec/memory.h | 23 +++ > include/hw/virtio/vhost.h | 3 - > memory.c | 22 ++ > 5 files changed, 229 insertions(+), 330 deletions(-) >
