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[Qemu-devel] [PATCH v3 0/4] Balloon inhibit enhancements, vfio restricti
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH v3 0/4] Balloon inhibit enhancements, vfio restriction |
Date: |
Tue, 7 Aug 2018 13:31:21 -0600 |
v3:
- Drop "nested" term in commit log (David)
- Adopt suggested wording in ccw code (Cornelia)
- Explain balloon inhibitor usage in vfio common (Peter)
- Fix to call inhibitor prior to re-using existing containers
to avoid gap that pinning may have occurred in set container
ioctl (self) - Peter, this change is the reason I didn't
include your R-b.
- Add R-b to patches 1 & 2
v2:
- Use atomic ops for balloon inhibit counter (Peter)
- Allow endpoint driver opt-in for ballooning, vfio-ccw opt-in by
default, vfio-pci opt-in by device option, only allowed for mdev
devices, no support added for platform as there are no platform
mdev devices.
See patch 3/4 for detailed explanation why ballooning and device
assignment typically don't mix. If this eventually changes, flags
on the iommu info struct or perhaps device info struct can inform
us for automatic opt-in. Thanks,
Alex
Alex Williamson (4):
balloon: Allow multiple inhibit users
kvm: Use inhibit to prevent ballooning without synchronous mmu
vfio: Inhibit ballooning based on group attachment to a container
vfio/ccw/pci: Allow devices to opt-in for ballooning
accel/kvm/kvm-all.c | 4 +++
balloon.c | 13 ++++++---
hw/vfio/ccw.c | 9 +++++++
hw/vfio/common.c | 51 +++++++++++++++++++++++++++++++++++
hw/vfio/pci.c | 26 +++++++++++++++++-
hw/vfio/trace-events | 1 +
hw/virtio/virtio-balloon.c | 4 +--
include/hw/vfio/vfio-common.h | 2 ++
8 files changed, 103 insertions(+), 7 deletions(-)
--
2.18.0