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+
+[regression][powerpc] some vcpus are found offline inside guest with different vsmt setting from qemu-cmdline and breaks subsequent vcpu hotplug operation (xive)
+
+Env:
+Host: Power9 HW ppc64le
+
+# lscpu
+Architecture:                    ppc64le
+Byte Order:                      Little Endian
+CPU(s):                          128
+On-line CPU(s) list:             24-31,40-159
+Thread(s) per core:              4
+Core(s) per socket:              16
+Socket(s):                       2
+NUMA node(s):                    2
+Model:                           2.3 (pvr 004e 1203)
+Model name:                      POWER9, altivec supported
+Frequency boost:                 enabled
+CPU max MHz:                     3800.0000
+CPU min MHz:                     2300.0000
+L1d cache:                       1 MiB
+L1i cache:                       1 MiB
+L2 cache:                        8 MiB
+L3 cache:                        160 MiB
+NUMA node0 CPU(s):               24-31,40-79
+NUMA node8 CPU(s):               80-159
+Vulnerability Itlb multihit:     Not affected
+Vulnerability L1tf:              Mitigation; RFI Flush, L1D private per thread
+Vulnerability Mds:               Not affected
+Vulnerability Meltdown:          Mitigation; RFI Flush, L1D private per thread
+Vulnerability Spec store bypass: Mitigation; Kernel entry/exit barrier (eieio)
+Vulnerability Spectre v1:        Mitigation; __user pointer sanitization, ori31 speculation barrier enabled
+Vulnerability Spectre v2:        Mitigation; Software count cache flush (hardware accelerated), Software link stack flush
+Vulnerability Srbds:             Not affected
+Vulnerability Tsx async abort:   Not affected
+
+
+
+Host Kernel: 5.9.0-0.rc8.28.fc34.ppc64le (Fedora rawhide)
+Guest Kernel: Fedora33(5.8.6-301.fc33.ppc64le)
+
+Qemu: e12ce85b2c79d83a340953291912875c30b3af06 (qemu/master)
+
+
+Steps to reproduce:
+
+Boot below kvm guest: (-M pseries,vsmt=2 -smp 8,cores=8,threads=1)
+
+ /home/sath/qemu/build/qemu-system-ppc64 -name vm1 -M pseries,vsmt=2 -accel kvm -m 4096  -smp 8,cores=8,threads=1 -nographic -nodefaults -serial mon:stdio -vga none -nographic -device virtio-scsi-pci -drive file=/home/sath/tests/data/avocado-vt/images/fdevel-ppc64le.qcow2,if=none,id=hd0,format=qcow2,cache=none -device scsi-hd,drive=hd0
+
+
+lscpu inside guest:
+Actual:
+[root@atest-guest ~]# lscpu
+Architecture:                    ppc64le
+Byte Order:                      Little Endian
+CPU(s):                          8
+On-line CPU(s) list:             0,2,4,6
+Off-line CPU(s) list:            1,3,5,7 --------------------------NOK
+Thread(s) per core:              1
+Core(s) per socket:              4
+Socket(s):                       1
+NUMA node(s):                    1
+Model:                           2.3 (pvr 004e 1203)
+Model name:                      POWER9 (architected), altivec supported
+Hypervisor vendor:               KVM
+Virtualization type:             para
+L1d cache:                       128 KiB
+L1i cache:                       128 KiB
+NUMA node0 CPU(s):               0,2,4,6
+Vulnerability Itlb multihit:     Not affected
+Vulnerability L1tf:              Mitigation; RFI Flush, L1D private per thread
+Vulnerability Mds:               Not affected
+Vulnerability Meltdown:          Mitigation; RFI Flush, L1D private per thread
+Vulnerability Spec store bypass: Mitigation; Kernel entry/exit barrier (eieio)
+Vulnerability Spectre v1:        Mitigation; __user pointer sanitization, ori31 
+                                 speculation barrier enabled
+Vulnerability Spectre v2:        Mitigation; Software count cache flush (hardwar
+                                 e accelerated), Software link stack flush
+Vulnerability Srbds:             Not affected
+Vulnerability Tsx async abort:   Not affected
+
+
+Expected:
+
+[root@atest-guest ~]# lscpu
+Architecture:                    ppc64le
+Byte Order:                      Little Endian
+CPU(s):                          8
+On-line CPU(s) list:             0-7
+Thread(s) per core:              1
+Core(s) per socket:              8
+Socket(s):                       1
+NUMA node(s):                    1
+Model:                           2.3 (pvr 004e 1203)
+Model name:                      POWER9 (architected), altivec supported
+Hypervisor vendor:               KVM
+Virtualization type:             para
+L1d cache:                       256 KiB
+L1i cache:                       256 KiB
+NUMA node0 CPU(s):               0-7
+Vulnerability Itlb multihit:     Not affected
+Vulnerability L1tf:              Mitigation; RFI Flush, L1D private per thread
+Vulnerability Mds:               Not affected
+Vulnerability Meltdown:          Mitigation; RFI Flush, L1D private per thread
+Vulnerability Spec store bypass: Mitigation; Kernel entry/exit barrier (eieio)
+Vulnerability Spectre v1:        Mitigation; __user pointer sanitization, ori31 
+                                 speculation barrier enabled
+Vulnerability Spectre v2:        Mitigation; Software count cache flush (hardwar
+                                 e accelerated), Software link stack flush
+Vulnerability Srbds:             Not affected
+Vulnerability Tsx async abort:   Not affected
+
+
+
+There by further vcpuhotplug operation fails...
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