hw/ppc/spapr: Fix the selection of the processor features

The current code uses pa_features_206 for POWERPC_MMU_2_06, and
for everything else, it uses pa_features_207. This is bad in some
cases because there is also a "degraded" MMU version of ISA 2.06,
called POWERPC_MMU_2_06a, which should of course use the flags for
2.06 instead. And there is also the possibility that the user runs
the pseries machine with a POWER5+ or even 970 processor. In that
case we certainly do not want to set the flags for 2.07, and rather
simply skip the setting of the pa-features property instead.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NCédric Le Goater <clg@kaod.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit 4cbec30d)

hw/ppc/spapr.c

@@ -607,12 +607,19 @@ static void spapr_populate_pa_features(CPUPPCState *env, void *fdt, int offset)
     uint8_t *pa_features;
     size_t pa_size;
 
-    if (env->mmu_model == POWERPC_MMU_2_06) {
+    switch (env->mmu_model) {
+    case POWERPC_MMU_2_06:
+    case POWERPC_MMU_2_06a:
         pa_features = pa_features_206;
         pa_size = sizeof(pa_features_206);
-    } else { /* env->mmu_model == POWERPC_MMU_2_07 */
+        break;
+    case POWERPC_MMU_2_07:
+    case POWERPC_MMU_2_07a:
         pa_features = pa_features_207;
         pa_size = sizeof(pa_features_207);
+        break;
+    default:
+        return;
     }
 
     if (env->ci_large_pages) {