From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 10 Apr 2017 18:55:17 +0200 (CEST) Received: from mail.linuxfoundation.org ([140.211.169.12]:37868 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23993951AbdDJQwGpjcoJ (ORCPT ); Mon, 10 Apr 2017 18:52:06 +0200 Received: from localhost (084035110146.static.ipv4.infopact.nl [84.35.110.146]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 92E2CB8F; Mon, 10 Apr 2017 16:52:00 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Huacai Chen , John Crispin , "Steven J . Hill" , Fuxin Zhang , Zhangjin Wu , linux-mips@linux-mips.org, Ralf Baechle Subject: [PATCH 4.10 060/110] MIPS: c-r4k: Fix Loongson-3s vcache/scache waysize calculation Date: Mon, 10 Apr 2017 18:42:51 +0200 Message-Id: <20170410164204.571726081@linuxfoundation.org> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20170410164201.247583164@linuxfoundation.org> References: <20170410164201.247583164@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 57658 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: gregkh@linuxfoundation.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips 4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Huacai Chen commit 0be032c190abcdcfa948082b6a1e0d461184ba4d upstream. If scache.waysize is 0, r4k___flush_cache_all() will do nothing and then cause bugs. BTW, though vcache.waysize isn't being used by now, we also fix its calculation. Signed-off-by: Huacai Chen Cc: John Crispin Cc: Steven J . Hill Cc: Fuxin Zhang Cc: Zhangjin Wu Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15756/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman --- arch/mips/mm/c-r4k.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1558,6 +1558,7 @@ static void probe_vcache(void) vcache_size = c->vcache.sets * c->vcache.ways * c->vcache.linesz; c->vcache.waybit = 0; + c->vcache.waysize = vcache_size / c->vcache.ways; pr_info("Unified victim cache %ldkB %s, linesize %d bytes.\n", vcache_size >> 10, way_string[c->vcache.ways], c->vcache.linesz); @@ -1660,6 +1661,7 @@ static void __init loongson3_sc_init(voi /* Loongson-3 has 4 cores, 1MB scache for each. scaches are shared */ scache_size *= 4; c->scache.waybit = 0; + c->scache.waysize = scache_size / c->scache.ways; pr_info("Unified secondary cache %ldkB %s, linesize %d bytes.\n", scache_size >> 10, way_string[c->scache.ways], c->scache.linesz); if (scache_size)