powerpc/xmon: don't access ASDR in VMs

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commit c2a20711fc upstream.

ASDR is HV-privileged and must only be accessed in HV-mode.
Fixes a Program Check (0x700) when xmon in a VM dumps SPRs.

Fixes: d1e1b351f5 ("powerpc/xmon: Add ISA v3.0 SPRs to SPR dump")
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200107021633.GB29843@us.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Sukadev Bhattiprolu 2020-01-06 13:50:02 -06:00 • committed by Greg Kroah-Hartman

parent e9dd965d02

commit 668713d276

1 changed files with 4 additions and 5 deletions

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arch/powerpc/xmon/xmon.c

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