From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-13.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,T_DKIMWL_WL_MED,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 8C6FE7D2EE for ; Thu, 30 Aug 2018 11:42:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728153AbeH3PnI (ORCPT ); Thu, 30 Aug 2018 11:43:08 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:36307 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727499AbeH3PnG (ORCPT ); Thu, 30 Aug 2018 11:43:06 -0400 Received: by mail-wm0-f65.google.com with SMTP id j192-v6so1688970wmj.1 for ; Thu, 30 Aug 2018 04:41:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=83X0Ly3GNFYkIBH/BFHbUkVhejW7zXmTm47ETsZa+AI=; b=K+wpn7aJOFLmPZBtmJEtbDEIz8wwRyqKm90YcGp+HMvxjAN9pVZ9cCtV/gejD6CHx8 CCRwiS6KNOavKWrpApClDZVkUNnM1PpPI0sPj53nn54bQD/sBRG7JsNHHoX4PU66BtJs sWQPtl9p71g3J5ENln6J0XiGFBCetgKOUOzChKveAkosXimFhJVQQlzelgwZoNQSSMrk bcDUcVPQoIRyS/FnXWMTu46L+C5BZMmJ8YmSSpruskuUgtBE+n6hxzvCGEZKPoQmzw5o IloxmtP6GY49QXdlXgn3aXUqKYfzJKfo4M4OVXaCo+jBOHmqanbdshjSYmo4j7v976ox Mgrg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=83X0Ly3GNFYkIBH/BFHbUkVhejW7zXmTm47ETsZa+AI=; b=FJ6KGzSTo/kvW8sYazSmU4V6rAZ9DSkFbaHHX0eNQJ73pD9s6gZBemZ4Y6ZYvFIZR4 ZdbIHL80iNb26XSMzDhzxugTXWisIL9ELUatA4bWLoUQxu4xo77qd0DJgU+z9EivMymE WFiRSgLfTWPJoJxyo8c/VV252mSnQihWCv/Bd3Bng28KCngmaIDXR5GjUGDmmxWJotMt Lkdz+3ISvAUw4YBhFgvhOIps3JO47nwPTsouPoAi5mbPy+CGnTMnwzpSiTD51CjGh9JC M7uPcRNpVWVXBMfA2SPAd+OskXqyAdQALQgyNIPIMX2NDHxWfpedwftyUpERR3uD/iYN T75Q== X-Gm-Message-State: APzg51CTx3945CajIwqb3bCjdu8NuFdJUPlMATPhNSNvaytvzUMAuhjJ A0m0i+mSHoHMB/wrQf3NHeo5+A== X-Google-Smtp-Source: ANB0VdblrnnClBYraLmPvStLXRnR3nCTmyxCJTD1zNjyPyVzvdcT/vtJe4+4mlXiStIG6mJaA/B2LQ== X-Received: by 2002:a1c:9e4d:: with SMTP id h74-v6mr1596295wme.70.1535629282357; Thu, 30 Aug 2018 04:41:22 -0700 (PDT) Received: from andreyknvl0.muc.corp.google.com ([2a00:79e0:15:10:84be:a42a:826d:c530]) by smtp.gmail.com with ESMTPSA id z184-v6sm2175218wmz.0.2018.08.30.04.41.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 Aug 2018 04:41:21 -0700 (PDT) From: Andrey Konovalov To: Catalin Marinas , Will Deacon , Mark Rutland , Robin Murphy , Al Viro , Andrey Konovalov , Kees Cook , Kate Stewart , Greg Kroah-Hartman , Andrew Morton , Ingo Molnar , "Kirill A . Shutemov" , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Chintan Pandya Subject: [PATCH v6 01/11] arm64: add type casts to untagged_addr macro Date: Thu, 30 Aug 2018 13:41:06 +0200 Message-Id: X-Mailer: git-send-email 2.19.0.rc0.228.g281dcd1b4d0-goog In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org This patch makes the untagged_addr macro accept all kinds of address types (void *, unsigned long, etc.) and allows not to specify type casts in each place where it is used. This is done by using __typeof__. Signed-off-by: Andrey Konovalov --- arch/arm64/include/asm/uaccess.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index e66b0fca99c2..2d6451cbaa86 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -102,7 +102,8 @@ static inline unsigned long __range_ok(const void __user *addr, unsigned long si * up with a tagged userland pointer. Clear the tag to get a sane pointer to * pass on to access_ok(), for instance. */ -#define untagged_addr(addr) sign_extend64(addr, 55) +#define untagged_addr(addr) \ + ((__typeof__(addr))sign_extend64((__u64)(addr), 55)) #define access_ok(type, addr, size) __range_ok(addr, size) #define user_addr_max get_fs -- 2.19.0.rc0.228.g281dcd1b4d0-goog