As we discovered yet another issue with current PBP code, we decided
to use a local PBP only, limited to one series of inflation requests.
This series supersedes:
- [PATCH-for-4.1 v2 0/3] virtio-balloon: fixes for PartialBalloonedPage
- [PATCH v1 0/3] virtio-balloon: PartialBalloonedPage rework

Patch #1 is a fix for a wrong sign extension (MST brought this up but
wasn't sure if it is broen - I think it is indeed broken). Patch #2 fixed
QEMU segfaults. Patch #3 and #4 are cleanups that make follow-up fixes
easier. Patch #5 avoids using RAMBlock addresses as tokens and patch #6
fixes all kinds of issues related to using a global PBP.

We want to have all patches in 4.1 and backport them to 4.0. Patch #1
needs backports to basically all QEMU releases with virtio-balloon.

Did a quick sanity test, hopefully no other BUG sneeked in. Will do some
more testing.

Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: qemu-stable@nongnu.org

David Hildenbrand (6):
  virtio-balloon: Fix wrong sign extension of PFNs
  virtio-balloon: Fix QEMU crashes on pagesize > BALLOON_PAGE_SIZE
  virtio-balloon: Simplify deflate with pbp
  virtio-balloon: Better names for offset variables in inflate/deflate
    code
  virtio-balloon: Rework pbp tracking data
  virtio-balloon: Use temporary PBP only

 hw/virtio/virtio-balloon.c         | 122 +++++++++++++++--------------
 include/hw/virtio/virtio-balloon.h |   3 -
 2 files changed, 62 insertions(+), 63 deletions(-)

-- 
2.21.0