powerpc/64s/exception: machine check fix KVM guest test

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The machine_check_handle_early hypervisor guest test is skipped if
!HVMODE or MSR[HV]=0, which is wrong for PR or nested hypervisors
that could be running a guest in this state.

Test HSTATE_IN_GUEST up front and use that to branch out to the KVM
handler, then MSR[PR] alone can test for this kernel's userspace.
This matches all other interrupt handling.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-4-npiggin@gmail.com

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Nicholas Piggin 2019-08-02 20:56:28 +10:00 • committed by Michael Ellerman

parent 1039f62431

commit 19dbe673e6

1 changed files with 13 additions and 20 deletions

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arch/powerpc/kernel/exceptions-64s.S

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