PASEMI: Wrong lscpu info since the RC1 of kernel 6.0

Christian Zigotzky chzigotzky at
Wed Sep 7 14:25:32 AEST 2022

Hi All,

I use the Nemo board with a PASemi PA6T CPU and some values of lscpu are wrong since the RC1 of kernel 6.0.

└─$ lscpu
Architecture:                    ppc64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Big Endian
CPU(s):                          2
On-line CPU(s) list:             0,1
Thread(s) per core:              2
Core(s) per socket:              1
Socket(s):                       1
Model:                           1.2 (pvr 0090 0102)
Model name:                      PA6T, altivec supported
L1d cache:                       64 KiB
L1i cache:                       64 KiB
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Vulnerable
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Vulnerable
Vulnerability Mmio stale data:   Not affected
Vulnerability Retbleed:          Not affected
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1:        Mitigation; __user pointer sanitization
Vulnerability Spectre v2:        Vulnerable
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected


One core with 2 threads is wrong. Two cores are correct. Each core has one thread.

Have you modified the detection of the CPU?


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