powerpc/xmon: don't access ASDR in VMs

[Sukadev Bhattiprolu]

>From 91a77dbea3c909ff15c66cded37f1334304a293d Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu <suka...@linux.ibm.com>
Date: Mon, 6 Jan 2020 13:50:02 -0600
Subject: [PATCH 1/1] powerpc/xmon: don't access ASDR in VMs

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

Signed-off-by: Sukadev Bhattiprolu <suka...@linux.ibm.com>
---
 arch/powerpc/xmon/xmon.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 02fae453c2ec..b8d179b5cf4f 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -1949,15 +1949,14 @@ static void dump_300_sprs(void)
 
        printf("pidr   = %.16lx  tidr  = %.16lx\n",
                mfspr(SPRN_PID), mfspr(SPRN_TIDR));
-       printf("asdr   = %.16lx  psscr = %.16lx\n",
-               mfspr(SPRN_ASDR), hv ? mfspr(SPRN_PSSCR)
-                                       : mfspr(SPRN_PSSCR_PR));
+       printf("psscr  = %.16lx\n",
+               hv ? mfspr(SPRN_PSSCR) : mfspr(SPRN_PSSCR_PR));
 
        if (!hv)
                return;
 
-       printf("ptcr   = %.16lx\n",
-               mfspr(SPRN_PTCR));
+       printf("ptcr   = %.16lx  asdr  = %.16lx\n",
+               mfspr(SPRN_PTCR), mfspr(SPRN_ASDR));
 #endif
 }
 
-- 
2.17.2