diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index cd1b687..5e925db 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -382,7 +382,8 @@
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
 		.machine_check		= machine_check_generic,
-		.oprofile_cpu_type	= "ppc64/compat-power5+",
+		.oprofile_cpu_type	= "ppc64/ibm-compat-v1",
+		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "power5+",
 	},
 	{	/* Power6 */
@@ -416,7 +417,8 @@
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
 		.machine_check		= machine_check_generic,
-		.oprofile_cpu_type	= "ppc64/compat-power6",
+		.oprofile_cpu_type	= "ppc64/ibm-compat-v1",
+		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "power6",
 	},
 	{	/* 2.06-compliant processor, i.e. Power7 "architected" mode */
@@ -429,7 +431,8 @@
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
 		.machine_check		= machine_check_generic,
-		.oprofile_cpu_type	= "ppc64/compat-power7",
+		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.oprofile_cpu_type	= "ppc64/ibm-compat-v1",
 		.platform		= "power7",
 	},
 	{	/* Power7 */
@@ -1833,8 +1836,10 @@
 		 * and, in that case, keep the current value for
 		 * oprofile_cpu_type.
 		 */
-		if (old.oprofile_cpu_type == NULL)
+		if (old.oprofile_cpu_type == NULL) {
 			t->oprofile_cpu_type = s->oprofile_cpu_type;
+			t->oprofile_type = s->oprofile_type;
+		}
 	}
 
 	*PTRRELOC(&cur_cpu_spec) = &the_cpu_spec;