1 files changed, 3 insertions, 0 deletions
diff --git a/hw/slw.c b/hw/slw.c
index d8829a6..88cb612 100644
--- a/hw/slw.c
+++ b/hw/slw.c
@@ -1407,6 +1407,9 @@ int64_t opal_slw_set_reg(uint64_t cpu_pir, uint64_t sprn, uint64_t val)
 	int i;
 	int spr_is_supported = 0;
 
+	if (proc_gen == proc_gen_p9)
+		return OPAL_UNSUPPORTED;
+
 	assert(c);
 	chip = get_chip(c->chip_id);
 	assert(chip);