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[PATCH v2 0/3] exclude hyperv synic sections from vhost

From: Dr. David Alan Gilbert (git)
Subject: [PATCH v2 0/3] exclude hyperv synic sections from vhost
Date: Mon, 13 Jan 2020 17:36:44 +0000

From: "Dr. David Alan Gilbert" <address@hidden>

Hyperv's synic (that we emulate) is a feature that allows the guest
to place some magic (4k) pages of RAM anywhere it likes in GPA.
This confuses vhost's RAM section merging when these pages
land over the top of hugepages.

Since they're not normal RAM, and they shouldn't have vhost DMAing
into them, exclude them from the vhost set.

This v2 is a complete rework after the v1 review; I've now got
a flag on MemoryRegion's that we set.

bz: https://bugzilla.redhat.com/show_bug.cgi?id=1779041

Dr. David Alan Gilbert (3):
  vhost: Add names to section rounded warning
  memory: Allow a MemoryRegion to be marked no_vhost
  hyperv/synic: Mark regions as no vhost

 hw/hyperv/hyperv.c    |  8 ++++++++
 hw/virtio/vhost.c     | 10 ++++++----
 include/exec/memory.h | 21 +++++++++++++++++++++
 memory.c              | 15 +++++++++++++++
 4 files changed, 50 insertions(+), 4 deletions(-)


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