From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B92D5C2BA19 for ; Wed, 15 Apr 2020 13:17:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9734F20575 for ; Wed, 15 Apr 2020 13:17:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586956634; bh=cVSnGmky4URc+XNevJqiD22Yml0XLV1Z898+b2B64sg=; h=Subject:To:Cc:From:Date:List-ID:From; b=tAOVG43Z/hftkVvaMZvn28WQogfqBWMCSSE5ZTyjU+lxjoErF1nN0WlNW6H4Z7JG3 uXtQzCLZUvQswQvMNJXK9XTr7DQSxw63TWEmafSrTFSXhm6pULHYAChX9JsR8pjlvA UlJPKhrJVINmcUORzFgsno8kxuHoCQDIgoNCqnGk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2897036AbgDONRG (ORCPT ); Wed, 15 Apr 2020 09:17:06 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:44731 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2506232AbgDONQi (ORCPT ); Wed, 15 Apr 2020 09:16:38 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 66C295C0148; Wed, 15 Apr 2020 09:16:37 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Wed, 15 Apr 2020 09:16:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=yQSWP1 HK294QFeiyYjykwZv41G6VvgWmPKgXqV2CORQ=; b=0EMrjrfNFJc+X23FKolLfq KLJFOoRl2vm2/FRAhA5ljUnFrnwAGzdeJ1lle76BUzWAjSGPs637T7Kv+aK4vu35 ZUfamd/1N/vRxjMsJEeQPiv+lDXO1b7KWBJL+8voqmFtdqP6VGVKidq+DhNs0Qrj T6dAABjRzAT8wWKZLapp34FQFLOCFLhoQi/l4R/3lsrvR7Vj5SJ59zt4FGWkCo1A nyRwOJvKyOdp9wifyh1vyZkRnzK544aXk/0Bb757m5B5SEK2fZQLmcUDA+uTQ1hU hcq1FrNFIXZ855D1H60GQLRGFZGxo/LI1DTbjVFekTG1ZDDoTusxEWU0jcyhPptA == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrfeefgdehtdcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepuffvhfffkfggtgfgsehtkeertddttd flnecuhfhrohhmpeeoghhrvghgkhhhsehlihhnuhigfhhouhhnuggrthhiohhnrdhorhhg qeenucffohhmrghinhepkhgvrhhnvghlrdhorhhgpdhlohifrdhssgenucfkphepkeefrd ekiedrkeelrddutdejnecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehmrghi lhhfrhhomhepghhrvghgsehkrhhorghhrdgtohhm X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id 11A10328005A; Wed, 15 Apr 2020 09:16:36 -0400 (EDT) Subject: FAILED: patch "[PATCH] powerpc/fsl_booke: Avoid creating duplicate tlb1 entry" failed to apply to 4.4-stable tree To: laurentiu.tudor@nxp.com, mpe@ellerman.id.au, oss@buserror.net Cc: From: Date: Wed, 15 Apr 2020 15:16:28 +0200 Message-ID: <15869565882541@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From aa4113340ae6c2811e046f08c2bc21011d20a072 Mon Sep 17 00:00:00 2001 From: Laurentiu Tudor Date: Thu, 23 Jan 2020 11:19:25 +0000 Subject: [PATCH] powerpc/fsl_booke: Avoid creating duplicate tlb1 entry In the current implementation, the call to loadcam_multi() is wrapped between switch_to_as1() and restore_to_as0() calls so, when it tries to create its own temporary AS=1 TLB1 entry, it ends up duplicating the existing one created by switch_to_as1(). Add a check to skip creating the temporary entry if already running in AS=1. Fixes: d9e1831a4202 ("powerpc/85xx: Load all early TLB entries at once") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Laurentiu Tudor Acked-by: Scott Wood Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200123111914.2565-1-laurentiu.tudor@nxp.com diff --git a/arch/powerpc/mm/nohash/tlb_low.S b/arch/powerpc/mm/nohash/tlb_low.S index 2ca407cedbe7..eaeee402f96e 100644 --- a/arch/powerpc/mm/nohash/tlb_low.S +++ b/arch/powerpc/mm/nohash/tlb_low.S @@ -397,7 +397,7 @@ _GLOBAL(set_context) * extern void loadcam_entry(unsigned int index) * * Load TLBCAM[index] entry in to the L2 CAM MMU - * Must preserve r7, r8, r9, and r10 + * Must preserve r7, r8, r9, r10 and r11 */ _GLOBAL(loadcam_entry) mflr r5 @@ -433,6 +433,10 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_BIG_PHYS) */ _GLOBAL(loadcam_multi) mflr r8 + /* Don't switch to AS=1 if already there */ + mfmsr r11 + andi. r11,r11,MSR_IS + bne 10f /* * Set up temporary TLB entry that is the same as what we're @@ -458,6 +462,7 @@ _GLOBAL(loadcam_multi) mtmsr r6 isync +10: mr r9,r3 add r10,r3,r4 2: bl loadcam_entry @@ -466,6 +471,10 @@ _GLOBAL(loadcam_multi) mr r3,r9 blt 2b + /* Don't return to AS=0 if we were in AS=1 at function start */ + andi. r11,r11,MSR_IS + bne 3f + /* Return to AS=0 and clear the temporary entry */ mfmsr r6 rlwinm. r6,r6,0,~(MSR_IS|MSR_DS) @@ -481,6 +490,7 @@ _GLOBAL(loadcam_multi) tlbwe isync +3: mtlr r8 blr #endif