On 9/28/25 10:54, Zhenzhong Duan wrote:
Hi,
Patch1: fixed an error restore path when virtio-mem is configured.
Patch2: fixed assert failure on error restore path, this issue happens
no matter if virtio-mem is configured.
Some trick is played to trigger the error path,
see
https://github.com/yiliu1765/qemu/commit/494d19e7f7242dbc47d7f236937cde0c396a4a7c
Patch3-4: issue only happens with two or more VFIO devices, no issue
if only one VFIO device.
Patch5: fix a bug that impact "query-balloon" execution
Patch6: SIGSEGV if I send "query-balloon" to source qmp monitor,
I'm not quite sure if it's deserved to be fixed, as guest has been
migrated to destination, it's not a big issue for source qemu to
SIGSEGV?
Thanks
Zhenzhong
Changelog:
v2:
- minor polishment to commit log (Steve)
- keep kvm_state so "query-balloon" could work after CPR-transfer (Markus)
- add a fix which is found during "query-balloon" execution
- rebased to master
Zhenzhong Duan (6):
vfio/container: Remap only populated parts in a section
vfio/cpr-legacy: drop an erroneous assert
vfio/iommufd: Set cpr.ioas_id on source side for CPR transfer
vfio/iommufd: Restore vbasedev's reference to hwpt after CPR transfer
accel/kvm: Fix an erroneous check on coalesced_mmio_ring
accel/kvm: Fix SIGSEGV when execute "query-balloon" after CPR transfer
include/hw/vfio/vfio-cpr.h | 2 +-
accel/kvm/kvm-all.c | 14 ++++++--------
hw/vfio/cpr-legacy.c | 22 +++++++++++++++-------
hw/vfio/iommufd.c | 8 ++++----
hw/vfio/listener.c | 4 ++--
5 files changed, 28 insertions(+), 22 deletions(-)
Applied patches 1-5 to vfio-next.
Thanks,
C.
