Received: by 2002:a05:6a10:a0d1:0:0:0:0 with SMTP id j17csp411691pxa; Wed, 12 Aug 2020 05:26:23 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwx3LehIwZ0HVScbjFo6qWmTmA53PcKtdXSvqlav3Hp7sb4DIiYyXuCaMvbdl8Kg3AKFPvG X-Received: by 2002:a05:6402:1d32:: with SMTP id dh18mr30404815edb.14.1597235183430; Wed, 12 Aug 2020 05:26:23 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597235183; cv=none; d=google.com; s=arc-20160816; b=ohnKi8iqx7V+BEbigWSeS41rEimL9kh32mjIN5w4YmXKFwIjO9y5BzDb5Q7TMEapR1 RtLMPgDtmULS8Yy3ooVaTQuIB35HkAcLom2wcD5EMvstEBAeJFYQX2at6tfy0VtIhKbY OAM4xpNXruSbp4n5nskPwekVS0uKH7DTnsWl0nDd2/YyqBHNnBnPtB5k3gLxGH3q7h27 NkS/ZnM7HHEd4NnQfsNsyfVZh5ZyZCoWjPgFKQI3E8nbMHsDxt7nalRF9dCrezRIVs4J ZdRyuUGSU58ciNcCemrXCdjFVJPQOk3R76cbAQ6HmQVkUlkkgdubHKEE0MRJvl7GiOcB hKDw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:date:cc:to:subject:from:references :in-reply-to:message-id; bh=4R5V5e3FNy7DdFn4xyP7MsMh4etOvbPzooloPDtS1/M=; b=ylpFxeJGO9LQ4pY5ih3tB5z2MMLmeOmqTHLRq3VrLBC7hka/XPMLhp3qjZsuom7ifl /+nPzEE0G6h0JS1mC7hglTxsOi1Bv4zst5Jele4FPjfM0OmKmXxBIjg9knLZKuqfwtPn NB2w2BwmgbC4gR81pvve4e9bpPRlC2RZd4Yw+H7JfhRqYJ/pWdpodknRcSYigg2/H7P9 OuvaxcDP2jeYEnyLGoQr7pLlQgEMu2E1y/m/4x4XtqdiTPYL0CZUBI3G3/YcFY4w33dY ALBQl6HiipmpI+52E7keTXI0aUPTmaiTabMtIgSOW6ufGYg6/twZ+fkK3UUceMMT9yHJ gghA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id u23si1127114edb.517.2020.08.12.05.26.00; Wed, 12 Aug 2020 05:26:23 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726871AbgHLMZV (ORCPT + 99 others); Wed, 12 Aug 2020 08:25:21 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:37292 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726698AbgHLMZU (ORCPT ); Wed, 12 Aug 2020 08:25:20 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4BRTRx1gnyzB09Zb; Wed, 12 Aug 2020 14:25:17 +0200 (CEST) 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 UlvtX8EgB1-Z; Wed, 12 Aug 2020 14:25:17 +0200 (CEST) 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 4BRTRx0nZWzB09ZY; Wed, 12 Aug 2020 14:25:17 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 6445D8B826; Wed, 12 Aug 2020 14:25:18 +0200 (CEST) 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 hFml_FvOlAVn; Wed, 12 Aug 2020 14:25:18 +0200 (CEST) Received: from po17688vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 19DD78B7FC; Wed, 12 Aug 2020 14:25:18 +0200 (CEST) Received: by po17688vm.idsi0.si.c-s.fr (Postfix, from userid 0) id BD14565C3B; Wed, 12 Aug 2020 12:25:17 +0000 (UTC) Message-Id: <13041c7df39e89ddf574ea0cdc6dedfdd9734140.1597235091.git.christophe.leroy@csgroup.eu> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v3 2/2] powerpc/uaccess: Add pre-update addressing to __get_user_asm() and __put_user_asm() To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Wed, 12 Aug 2020 12:25:17 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable pre-update addressing mode in __get_user_asm() and __put_user_asm() Signed-off-by: Christophe Leroy --- v3: new, splited out from patch 1. --- arch/powerpc/include/asm/uaccess.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index c546fb36043d..eadb25f4cc9f 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -159,7 +159,7 @@ extern long __put_user_bad(void); */ #define __put_user_asm(x, addr, err, op) \ __asm__ __volatile__( \ - "1: " op "%X2 %1,%2 # put_user\n" \ + "1: " op "%U2%X2 %1,%2 # put_user\n" \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: li %0,%3\n" \ @@ -167,7 +167,7 @@ extern long __put_user_bad(void); ".previous\n" \ EX_TABLE(1b, 3b) \ : "=r" (err) \ - : "r" (x), "m" (*addr), "i" (-EFAULT), "0" (err)) + : "r" (x), "m<>" (*addr), "i" (-EFAULT), "0" (err)) #ifdef __powerpc64__ #define __put_user_asm2(x, ptr, retval) \ @@ -317,7 +317,7 @@ extern long __get_user_bad(void); #define __get_user_asm(x, addr, err, op) \ __asm__ __volatile__( \ - "1: "op"%X2 %1, %2 # get_user\n" \ + "1: "op"%U2%X2 %1, %2 # get_user\n" \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: li %0,%3\n" \ @@ -326,7 +326,7 @@ extern long __get_user_bad(void); ".previous\n" \ EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (x) \ - : "m" (*addr), "i" (-EFAULT), "0" (err)) + : "m<>" (*addr), "i" (-EFAULT), "0" (err)) #ifdef __powerpc64__ #define __get_user_asm2(x, addr, err) \ -- 2.25.0