[v1] Allow memory_region_register_iommu_notifier() to fail

[Qemu-devel] [PATCH v1 0/6] Allow memory_region_register_iommu_notifier() to fail

Eric Auger posted 6 patches 6 years, 1 month ago

Diff against v2 v3 v4
Download series mbox

Test docker-clang@ubuntu passed

Test FreeBSD passed

Test checkpatch passed

Test docker-quick@centos7 passed

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20190913083615.14719-1-eric.auger@redhat.com

Maintainers: Eduardo Habkost <ehabkost@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Eric Auger <eric.auger@redhat.com>, Alex Williamson <alex.williamson@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Peter Maydell <peter.maydell@linaro.org>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Richard Henderson <rth@twiddle.net>, "Michael S. Tsirkin" <mst@redhat.com>

There is a newer version of this series

exec.c                |  3 ++-
hw/arm/smmuv3.c       |  8 +++++---
hw/i386/amd_iommu.c   |  9 +++++----
hw/i386/intel_iommu.c |  9 +++++----
hw/ppc/spapr_iommu.c  |  7 ++++---
hw/vfio/common.c      |  8 ++++++--
hw/virtio/vhost.c     |  2 +-
include/exec/memory.h | 18 +++++++++++++-----
memory.c              | 28 ++++++++++++++++++----------
9 files changed, 59 insertions(+), 33 deletions(-)

Expand all Fold all

[Qemu-devel] [PATCH v1 0/6] Allow memory_region_register_iommu_notifier() to fail

Posted by Eric Auger 6 years, 1 month ago

This series allows the memory_region_register_iommu_notifier()
to fail. As of now, when a MAP notifier is attempted to be
registered along with SMMUv3, Intel iommu without caching mode
or AMD IOMMU, we exit in the IOMMU MR notify_flag_changed()
callback. In case of VFIO assigned device hotplug, this could be
handled more nicely directly within the VFIO code, simply rejecting
the hotplug without exiting. This is what the series achieves
by handling the memory_region_register_iommu_notifier() returned
value.

Best Regards

Eric

This series can be found at:
https://github.com/eauger/qemu/tree/v4.1.0_register_iommu_notifier_fail_v1

History:

Follow-up of "VFIO/SMMUv3: Fail on VFIO/HW nested paging detection"
https://patchew.org/QEMU/20190829090141.21821-1-eric.auger@redhat.com/

Eric Auger (6):
  memory: allow memory_region_register_iommu_notifier() to fail
  vfio/common: Handle memory_region_register_iommu_notifier() failure
  exec: assert on memory_region_register_iommu_notifier() failure
  vhost: assert on memory_region_register_iommu_notifier() failure
  intel_iommu: Let vtd_iommu_notify_flag_changed() fail
  amd_iommu: Let amdvi_iommu_notify_flag_changed() fail

 exec.c                |  3 ++-
 hw/arm/smmuv3.c       |  8 +++++---
 hw/i386/amd_iommu.c   |  9 +++++----
 hw/i386/intel_iommu.c |  9 +++++----
 hw/ppc/spapr_iommu.c  |  7 ++++---
 hw/vfio/common.c      |  8 ++++++--
 hw/virtio/vhost.c     |  2 +-
 include/exec/memory.h | 18 +++++++++++++-----
 memory.c              | 28 ++++++++++++++++++----------
 9 files changed, 59 insertions(+), 33 deletions(-)

-- 
2.20.1