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Solaris 10 psrinfo command reports error: "psrinfo: Physical processor view not supported"

Hi *,
case for thsi is already open, but I thought it might be easier to get an answer here...

Well, we have installed: Solaris 10 9/10 on a SPARC T4-4
ILOM Updates are the most recent ones. If I execute psrinfo -p to get the number of physical CPUs above error is produced.

What I noticed is that the chip_id is set to -1 to all Cores, in the kstat -m cpu_info output:

module: cpu_info                        instance: 0
name:   cpu_info0                       class:    misc
        brand                           SPARC-T4
        chip_id                         -1
        clock_MHz                       2998
        core_id                         0
        cpu_fru                         hc:///component=
        cpu_type                        sparcv9
        crtime                          158071.76064159
        current_clock_Hz                2997750000

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