From: Ralf Baechle <ralf@linux-mips.org>
Date: Mon, 19 Jun 2006 20:56:25 +0000 (+0100)
Subject: [MIPS] Treat CPUs with AR bit as physically indexed.
X-Git-Tag: v2.6.18-rc1~353^2~5
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=beab375a48f0cd90eb08f04e2c1dad67b9e6d3f8;p=linux-2.6

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

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

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index a78355a44c..33b1451a36 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) {