From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: ARC-Seal: i=1; a=rsa-sha256; t=1522169868; cv=none; d=google.com; s=arc-20160816; b=H1AH3M5j22Q6MJ7SsrC4NW6Qu2XOcGX9CJ0KQAvzAWZwS55sTjVHkFg8LJtgcORKlv uhji9X6B6kObkDgSAWl9aXpVenrQfBUd6YvlqGOAnvQ6TyBIOCsrTD3OgZdR9pMyhtA/ eYGSOLAGaBfb6deQ0PyfV43iHmHWFhJfCjCLFewVtfRftPjBpOhXjV9W7PQQ2TPA04B8 B910KMWrNoj6JLK6vq25m42QQHChGZnXnV3XlSdT9zUuQE8A4loS6T6xWVBXHQFpVDWH rZ1a2BInW0r17trdPPfakKPRlmkN2iDIlyqWN3E4ekf37BR9/feGoHxznDK6Gwc/penK cmyQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:arc-authentication-results; bh=16zO1fZlfRozQmZA0XwO/F+8TDPyjWmWtXbmZBvVg9M=; b=lwu0T2qUIppArVPhTI8Q00RZ/Va7vJEpCXo8hsYnyECLp0BzJF01xyRXEL/3QC/v46 qiRC6ySyuLws7fIDFUFTE03dVy7MtOQt81P8Y6IzTcVrlvT164x6TykcVal22cm/upAl iWI7gSOWqUuUroPwQdIbjpkXXM2irGOuybj7GQaqMkq4G0rCVoMs6kgSIi9omzNRc9Dv xPkER7i8WlU4SeMI//drsZyXSl5dt/b6UGSpKmxj3OVlczLRMiaKoeOHVkA4MjimKNmV Xy2D33G/+rdZm5wZQAQbRQJBbDT5622tUipL1ow26Hzkc2Eshz9uXLsd6qFNPq3t6wCB wGPQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=TC0a80Yr; spf=pass (google.com: domain of andreyknvl@google.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=andreyknvl@google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=TC0a80Yr; spf=pass (google.com: domain of andreyknvl@google.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=andreyknvl@google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com X-Google-Smtp-Source: AIpwx4/+PlMoTXyL3X99J/NO1BvfdIk8E5OZI/edo9QrrTbdJ9nLf1NSk4SSfQkVN/3eIvmvXQf2lg== From: Andrey Konovalov To: Catalin Marinas , Will Deacon , Jonathan Corbet , Mark Rutland , Robin Murphy , Al Viro , Andrey Konovalov , James Morse , Kees Cook , Bart Van Assche , Kate Stewart , Greg Kroah-Hartman , Thomas Gleixner , Philippe Ombredanne , Andrew Morton , Ingo Molnar , "Kirill A . Shutemov" , Dan Williams , "Aneesh Kumar K . V" , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan Subject: [RFC PATCH v2 1/6] arm64: add type casts to untagged_addr macro Date: Tue, 27 Mar 2018 18:57:37 +0200 Message-Id: <64234f64bde32a3f58466a74445848bb7f8cda83.1522169685.git.andreyknvl@google.com> X-Mailer: git-send-email 2.17.0.rc0.231.g781580f067-goog In-Reply-To: References: In-Reply-To: References: X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1596110792172731978?= X-GMAIL-MSGID: =?utf-8?q?1596110792172731978?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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 -- 2.17.0.rc0.231.g781580f067-goog 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=-4.6 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,T_DKIM_INVALID, T_RP_MATCHES_RCVD autolearn=ham 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 5E2037E22E for ; Tue, 27 Mar 2018 16:59:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753370AbeC0Q7P (ORCPT ); Tue, 27 Mar 2018 12:59:15 -0400 Received: from mail-wr0-f193.google.com ([209.85.128.193]:36512 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753348AbeC0Q5t (ORCPT ); Tue, 27 Mar 2018 12:57:49 -0400 Received: by mail-wr0-f193.google.com with SMTP id y55so2540110wry.3 for ; Tue, 27 Mar 2018 09:57:49 -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 :in-reply-to:references; bh=16zO1fZlfRozQmZA0XwO/F+8TDPyjWmWtXbmZBvVg9M=; b=TC0a80YrPD0yleRLOh0Gf36qFGESWeMXgW+LmnvssTpXCrf0jiBi4KHJQL8xZt6D7L 5cnvVMqn6SzNJrYOnnKnPg2hfZsLUnIT3MrIiFo2AO6vwiMMrS9O31Rfydf2E7xPxCO3 Pl3LnyybAEDCiPh5xuxZjc8V/uh6gUPauqcE93PfW5mETsTeDNcfvvlSNJZ7wOnbwX5c TkRiWvea3qZyuu0gBAK87Mj6Gh+Kbdhnh1+bQtaDnvkoC/TYEitoIF5K42heztt/E5jx FTbW4sLcF5GnHn6Hxaaf+8aDhnJ3IavbJLs+OgwDgQm6tilkq/s/P1xkRHZhrWb1xucB 8/Jw== 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:in-reply-to:references; bh=16zO1fZlfRozQmZA0XwO/F+8TDPyjWmWtXbmZBvVg9M=; b=WqemYMK8i39rj9hGyd+VsZYtaeJQte5rHplIgB/q5RBwOW7hMaRjdP1u9wtR6j4DKa d3aZVS9x2Izd2+hmSE2m7nlnPr7XYzBGPGw6ztRGk5ZoHe/k4OKP8zn44CWjpAuWoSKM 0djApua5/bXa2CZ1gaM8QsVf+z5AeXmYvxyO0TEiD/K90jiJ8MFy6+i6oZ7jNTY1H2w3 uDlKGM+yoe0iLtNSKfK5iXyg11O7SqRpem/0IHpoiIEl9ROJJY1FF4jqs0KpLIjDdabH 16nJ7TtV/te0zlReyyQ2MsnsO8Fkvb14vUzEty4ac7GYQ/WeNSU9wIEoAkddAtkjJGGu ez/w== X-Gm-Message-State: AElRT7FrytapY+b+6Jg9Usn5rOJZ/+DSabdZ5pjZVj8eY3/h67A1J+dm wUmB/KjqO047ImddYdnXbU/ThA== X-Google-Smtp-Source: AIpwx4/+PlMoTXyL3X99J/NO1BvfdIk8E5OZI/edo9QrrTbdJ9nLf1NSk4SSfQkVN/3eIvmvXQf2lg== X-Received: by 10.223.199.15 with SMTP id k15mr125735wrg.178.1522169868202; Tue, 27 Mar 2018 09:57:48 -0700 (PDT) Received: from andreyknvl0.muc.corp.google.com ([2a00:79e0:15:10:84be:a42a:826d:c530]) by smtp.gmail.com with ESMTPSA id 93sm1622992wrh.46.2018.03.27.09.57.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Mar 2018 09:57:47 -0700 (PDT) From: Andrey Konovalov To: Catalin Marinas , Will Deacon , Jonathan Corbet , Mark Rutland , Robin Murphy , Al Viro , Andrey Konovalov , James Morse , Kees Cook , Bart Van Assche , Kate Stewart , Greg Kroah-Hartman , Thomas Gleixner , Philippe Ombredanne , Andrew Morton , Ingo Molnar , "Kirill A . Shutemov" , Dan Williams , "Aneesh Kumar K . V" , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan Subject: [RFC PATCH v2 1/6] arm64: add type casts to untagged_addr macro Date: Tue, 27 Mar 2018 18:57:37 +0200 Message-Id: <64234f64bde32a3f58466a74445848bb7f8cda83.1522169685.git.andreyknvl@google.com> X-Mailer: git-send-email 2.17.0.rc0.231.g781580f067-goog In-Reply-To: References: In-Reply-To: References: 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 -- 2.17.0.rc0.231.g781580f067-goog -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: andreyknvl@google.com (Andrey Konovalov) Date: Tue, 27 Mar 2018 18:57:37 +0200 Subject: [RFC PATCH v2 1/6] arm64: add type casts to untagged_addr macro In-Reply-To: References: Message-ID: <64234f64bde32a3f58466a74445848bb7f8cda83.1522169685.git.andreyknvl@google.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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 -- 2.17.0.rc0.231.g781580f067-goog