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    SubjectRe: smpboot seems to be confused on dual EPYC system
    2018-05-27 23:22 GMT+02:00 Gabriel C <nix.or.die@gmail.com>:
    >
    > 2018-05-27 22:07 GMT+02:00 Borislav Petkov <bp@alien8.de>:
    >>
    >> On Sun, May 20, 2018 at 03:23:32PM +0200, Gabriel C wrote:
    >> > Hello,
    >> >
    >> > I have an H11DSi-NT board with 2 * EPYC 7281 16C/32T CPUs.
    >> >
    >> > On that box for some reason spmboot things '4' logical packages
    >> > are possible.
    >>
    >> First of all, which kernel?
    >
    >

    Here one box with single socket with an AMD EPYC 7551P
    on H11SSL-NC mobo running kernel 4.16.10:

    ...
    [ 0.000000] smpboot: Allowing 128 CPUs, 64 hotplug CPUs
    [ 0.030000] smpboot: CPU0: AMD EPYC 7551P 32-Core Processor
    (family: 0x17, model: 0x1, stepping: 0x2)
    [ 0.545084] smpboot: Max logical packages: 2
    [ 0.545084] smpboot: Total of 64 processors activated (255989.37 BogoMIPS)
    ...

    128CPUs for sure not possible and for sure no way to have '2' CPUs installed.

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