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Fienix kernel: kvmppc_exit_pr_progint: emulation at 700 failed (00000000)

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9600f261acaaabd476d7833cec2dd20f2919f1a0 is the first bad commit
commit 9600f261acaaabd476d7833cec2dd20f2919f1a0
Author: Nicholas Piggin <[email protected]>
Date:   Wed Feb 26 03:35:21 2020 +1000

    powerpc/64s/exception: Move KVM test to common code
    
    This allows more code to be moved out of unrelocated regions. The
    system call KVMTEST is changed to be open-coded and remain in the
    tramp area to avoid having to move it to entry_64.S. The custom nature
    of the system call entry code means the hcall case can be made more
    streamlined than regular interrupt handlers.
    
    mpe: Incorporate fix from Nick:
    
    Moving KVM test to the common entry code missed the case of HMI and
    MCE, which do not do __GEN_COMMON_ENTRY (because they don't want to
    switch to virt mode).
    
    This means a MCE or HMI exception that is taken while KVM is running a
    guest context will not be switched out of that context, and KVM won't
    be notified. Found by running sigfuz in guest with patched host on
    POWER9 DD2.3, which causes some TM related HMI interrupts (which are
    expected and supposed to be handled by KVM).
    
    This fix adds a __GEN_REALMODE_COMMON_ENTRY for those handlers to add
    the KVM test. This makes them look a little more like other handlers
    that all use __GEN_COMMON_ENTRY.
    
    Signed-off-by: Nicholas Piggin <[email protected]>
    Signed-off-by: Michael Ellerman <[email protected]>
    Link: https://lore.kernel.org/r/[email protected]

:040000 040000 ec21cec22d165f8696d69532734cb2985d532cb0 87dd49a9cd7202ec79350e8ca26cea01f1dbd93d M	arch

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git checkout d38c07afc356ddebaa3ed8ecb3f553340e05c969

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git revert d38c07afc356ddebaa3ed8ecb3f553340e05c969 -m 1