[MIPS] Treat CPUs with AR bit as physically indexed.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index a78355a44c41..33b1451a365d 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1009,10 +1009,15 @@ static void __init probe_pcache(void)
                 break;
         case CPU_24K:
         case CPU_34K:
-                if (!(read_c0_config7() & (1 << 16)))
+                if ((read_c0_config7() & (1 << 16))) {
+                        /* effectively physically indexed dcache,
+                           thus no virtual aliases. */
+                        c->dcache.flags |= MIPS_CACHE_PINDEX;
+                        break;
+                }
         default:
-                        if (c->dcache.waysize > PAGE_SIZE)
-                                c->dcache.flags |= MIPS_CACHE_ALIASES;
+                if (c->dcache.waysize > PAGE_SIZE)
+                        c->dcache.flags |= MIPS_CACHE_ALIASES;
         }
 
         switch (c->cputype) {