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KVM: PPC: Book3S HV P9: Read machine check registers while MSR[RI] is 0
authorNicholas Piggin <npiggin@gmail.com>
Fri, 28 May 2021 09:07:36 +0000 (19:07 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 10 Jun 2021 12:12:13 +0000 (22:12 +1000)
commitfa21392d7e895e17a47698b62a7087c203fb9d71
treefe6a82b9ddb0ceaeed2a81c5066533e04bcfc60ftree | snapshot
parent94108dd9eea8fe1307a01688808e11fc53aa17f1commit | diff
KVM: PPC: Book3S HV P9: Read machine check registers while MSR[RI] is 0

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
arch/powerpc/kvm/book3s_hv.c diff | blob | history
arch/powerpc/kvm/book3s_hv_p9_entry.c diff | blob | history
Linux Kernel Source Tree.