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[209.132.180.67]) by mx.google.com with ESMTP id m10si19142716pls.65.2019.02.21.02.38.43; Thu, 21 Feb 2019 02:38:58 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@c-s.fr header.s=mail header.b=iz8P9cFY; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727632AbfBUKiF (ORCPT + 99 others); Thu, 21 Feb 2019 05:38:05 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:45890 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725814AbfBUKiB (ORCPT ); Thu, 21 Feb 2019 05:38:01 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 444rXQ5kVdz9typC; Thu, 21 Feb 2019 11:37:58 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=iz8P9cFY; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id uX6bxJk-grGh; Thu, 21 Feb 2019 11:37:58 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 444rXQ4ZXCz9typB; Thu, 21 Feb 2019 11:37:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1550745478; bh=NErzogSSkg/XXabuYdfqnneQHMIGUgK7EgV7ElZeibE=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=iz8P9cFYRtbj2VxMYr4OrAovAjFexQrcgQPwBdxBE4mn/4B3EqCtJUs4JAIAbSLZm nR/eFsasOvRLUeT6pneBf6yJEJvM9dBTYBbXfIBoK5XZdFl8bV65Mifv8uKnySLRmI AjRfk9s6jtEdYcm1V0zJRLaKgiyJ/8nmhzHF64N4= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id C7F028B859; Thu, 21 Feb 2019 11:37:59 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id IQdBQ9vsNo84; Thu, 21 Feb 2019 11:37:59 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id A63AC8B852; Thu, 21 Feb 2019 11:37:59 +0100 (CET) Received: by localhost.localdomain (Postfix, from userid 0) id 6EEB46E856; Thu, 21 Feb 2019 10:37:59 +0000 (UTC) Message-Id: <643bd89107cad3c9aeae98631975f2f978db1a4e.1550745320.git.christophe.leroy@c-s.fr> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v2 07/10] powerpc/603: Don't handle _PAGE_RW and _PAGE_DIRTY on ITLB misses To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Thu, 21 Feb 2019 10:37:59 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org _PAGE_RW and _PAGE_DIRTY do not matter for ITLB misses. Signed-off-by: Christophe Leroy --- arch/powerpc/kernel/head_32.S | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index e4338d785a94..6db54425f1d9 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -526,13 +526,9 @@ InstructionTLBMiss: */ stw r0,0(r2) /* update PTE (accessed bit) */ /* Convert linux-style PTE to low word of PPC-style PTE */ - rlwinm r1,r0,32-10,31,31 /* _PAGE_RW -> PP lsb */ - rlwinm r2,r0,32-7,31,31 /* _PAGE_DIRTY -> PP lsb */ - and r1,r1,r2 /* writable if _RW and _DIRTY */ rlwimi r0,r0,32-1,30,30 /* _PAGE_USER -> PP msb */ - rlwimi r0,r0,32-1,31,31 /* _PAGE_USER -> PP lsb */ - ori r1,r1,0xe04 /* clear out reserved bits */ - andc r1,r0,r1 /* PP = user? (rw&dirty? 2: 3): 0 */ + ori r1, r1, 0xe05 /* clear out reserved bits */ + andc r1, r0, r1 /* PP = user? 2 : 0 */ BEGIN_FTR_SECTION rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) -- 2.13.3