KVM: PPC: Book3S HV P9: Read machine check registers while MSR[RI] is 0

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SRR0/1, DAR, DSISR must all be protected from machine check which can
clobber them. Ensure MSR[RI] is clear while they are live.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-17-npiggin@gmail.com

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Nicholas Piggin 2021-05-28 19:07:36 +10:00 • committed by Michael Ellerman

parent c00366e237

commit 6d770e3fe9

2 changed files with 39 additions and 5 deletions

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11

arch/powerpc/kvm/book3s_hv.c

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33

arch/powerpc/kvm/book3s_hv_p9_entry.c

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