Comment 3 for bug 1809439
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| Po-Hsu Lin (cypressyew) wrote Re: cpu_hot_plug test in ubuntu_kernel_selftest failed on B s390x KVM | #3 |
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0e1f616
(Get the code!)
This issue looks like a bug for s390x in the kernel.
There are only two processors listed on this Bionic s390x KVM, not sure why it will report CPU 0-1 are in online state, 2 in offline state:
$ cat /proc/cpuinfo
vendor_id : IBM/S390
# processors : 2
bogomips per cpu: 3033.00
max thread id : 0
features : esan3 zarch stfle msa ldisp eimm dfp edat etf3eh highgprs te vx
facilities : 0 1 2 3 4 6 7 8 9 10 13 14 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 32 33 34 35 36 37 40 41 42 43 44 45 47 48 49 50 51 52 53 57 64 69 71 73 74 75 76 77 78 80 81 82 129 131 138
cache0 : level=1 type=Data scope=Private size=128K line_size=256 associativity=8
cache1 : level=1 type=Instruction scope=Private size=96K line_size=256 associativity=6
cache2 : level=2 type=Data scope=Private size=2048K line_size=256 associativity=8
cache3 : level=2 type=Instruction scope=Private size=2048K line_size=256 associativity=8
cache4 : level=3 type=Unified scope=Shared size=65536K line_size=256 associativity=16
cache5 : level=4 type=Unified scope=Shared size=491520K line_size=256 associativity=30
processor 0: version = FF, identification = 268F67, machine = 2964
processor 1: version = FF, identification = 268F67, machine = 2964
cpu number : 0
cpu MHz dynamic : 5000
cpu MHz static : 5000
cpu number : 1
cpu MHz dynamic : 5000
cpu MHz static : 5000