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    SubjectRe: [PATCH v4] powerpc/pseries: read the lpar name from the firmware
    Date
    Laurent Dufour <ldufour@linux.ibm.com> writes:
    > On 07/12/2021, 18:11:09, Laurent Dufour wrote:
    >> The LPAR name may be changed after the LPAR has been started in the HMC.
    >> In that case lparstat command is not reporting the updated value because it
    >> reads it from the device tree which is read at boot time.
    >>
    >> However this value could be read from RTAS.
    >>
    >> Adding this value in the /proc/powerpc/lparcfg output allows to read the
    >> updated value.
    >
    > Do you consider taking that patch soon?

    This version prints an error on non-PowerVM guests the first time
    lparcfg is read.

    And I still contend that having this function fall back to reporting the
    partition name in the DT would provide a beneficial consistency in the
    user-facing API, allowing programs to avoid hypervisor-specific branches
    in their code. I don't understand the resistance I've encountered here.
    The fallback I'm suggesting (a root node property lookup) is certainly
    not more complex than the RTAS call sequence you've already implemented.

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