88693ab2a5
Kernel commit 292a7d6fca33 ("KVM: s390: pv: fix asynchronous teardown
for small VMs") causes the KVM_PV_ASYNC_CLEANUP_PREPARE ioctl to fail
if the VM is not larger than 2GiB. QEMU would attempt it and fail,
print an error message, and then proceed with a normal teardown.
Avoid attempting to use asynchronous teardown altogether when the VM is
not larger than 2 GiB. This will avoid triggering the error message and
also avoid pointless overhead; normal teardown is fast enough for small
VMs.
Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Fixes:
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| .. | ||
| 3270-ccw.c | ||
| ap-bridge.c | ||
| ap-device.c | ||
| ccw-device.c | ||
| ccw-device.h | ||
| css-bridge.c | ||
| css.c | ||
| event-facility.c | ||
| ipl.c | ||
| ipl.h | ||
| Kconfig | ||
| meson.build | ||
| pv.c | ||
| s390-ccw.c | ||
| s390-pci-bus.c | ||
| s390-pci-inst.c | ||
| s390-pci-kvm.c | ||
| s390-pci-vfio.c | ||
| s390-skeys-kvm.c | ||
| s390-skeys.c | ||
| s390-stattrib-kvm.c | ||
| s390-stattrib.c | ||
| s390-virtio-ccw.c | ||
| s390-virtio-hcall.c | ||
| s390-virtio-hcall.h | ||
| sclp.c | ||
| sclpcpu.c | ||
| sclpquiesce.c | ||
| tod-kvm.c | ||
| tod-tcg.c | ||
| tod.c | ||
| trace-events | ||
| trace.h | ||
| vhost-scsi-ccw.c | ||
| vhost-user-fs-ccw.c | ||
| vhost-vsock-ccw.c | ||
| virtio-ccw-9p.c | ||
| virtio-ccw-balloon.c | ||
| virtio-ccw-blk.c | ||
| virtio-ccw-crypto.c | ||
| virtio-ccw-gpu.c | ||
| virtio-ccw-input.c | ||
| virtio-ccw-net.c | ||
| virtio-ccw-rng.c | ||
| virtio-ccw-scsi.c | ||
| virtio-ccw-serial.c | ||
| virtio-ccw.c | ||
| virtio-ccw.h | ||