From patchwork Wed Mar 20 14:51:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 10862081 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E9DFD14DE for ; Wed, 20 Mar 2019 14:55:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D6DC929790 for ; Wed, 20 Mar 2019 14:55:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CA4D529DAF; Wed, 20 Mar 2019 14:55:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 741BC29DAD for ; Wed, 20 Mar 2019 14:55:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728323AbfCTOvs (ORCPT ); Wed, 20 Mar 2019 10:51:48 -0400 Received: from mail-vk1-f202.google.com ([209.85.221.202]:45981 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728316AbfCTOvr (ORCPT ); Wed, 20 Mar 2019 10:51:47 -0400 Received: by mail-vk1-f202.google.com with SMTP id w71so1038217vkd.12 for ; Wed, 20 Mar 2019 07:51:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=20ADMBvUHCnrZbwN97RAJ/EQy38heFRI/sJcSeCbm08=; b=fBgfxh9GgamRMHg2ccGZFUoBByz4GOt4sfGHL3tpn3ZQ1767xayTeCcyI3yXs2mSPo 9L9Z+nWnCgS1IkEZKl0L10t99Kxoazx3+kM5cwGHIxLejwB/C6WPwJK7TADmWr+R7zyk SVEtWmrnvfwXlM1zlGyhZQZOBAu3t9jHBJl+/8o9qgFuWwu995t1w8VbhpR252WdIqRb sE8Ml1x7tGBmVRlYQ2buPK+l8HSNYgOfT1+UtDa9CPF/KYM3j84TJNM8Ny+6EFQlptxm +USjsypvXQxVHDirJ+TCg6zJChaLRFAlYddXbqGYhP/AQ/lMXeTl1LdpntucdrWI+Hfw RS9A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=20ADMBvUHCnrZbwN97RAJ/EQy38heFRI/sJcSeCbm08=; b=AePXQwICoYv5pa8+LAOUYJ9CYZvFiMzkje4hwNS4fz+6e6UKMxLVE46eQIaoEjPIKS H3h8MOVXsmpEag5ger1DS87oCXFVqIYxqvz48mGSDhOQ+66EAC4U8L0fLWxEBqTNAhQZ qmxcNnXOc62SVgazNzufFMiXxNz8MPjGhxpU32Yb88ks96gfUx9am8rRZNiUi+9RZjOz 8uDtIehZufpy2aWhefnXpFrQIBuWMnnjSENbb43NntzKeNHTlut10t8jdMh/1DY7ONEH XNGoimNpHbKEmLVGXnCVpcC2rR4wXTAvZYN8EBVZJj3Exi2bm5zkiqL2qi+UnjO7iuDx +1+Q== X-Gm-Message-State: APjAAAWTActAp9G42KTgLco27TtJKHzyICMbwppEulYpnbxJiosmpfiz 1U3ZbFHg2YYmCOU2BmV+MPm1eeTDS0cEbcll X-Google-Smtp-Source: APXvYqwYZ0q0Kqz4Z5cFxviM/RSvP8v992XNq+tHsBzIasT+5NuCnNNfSRat/OKpd5fkXdzMwZGbNS7t4SMgCBo4 X-Received: by 2002:a1f:2a48:: with SMTP id q69mr16477241vkq.7.1553093506075; Wed, 20 Mar 2019 07:51:46 -0700 (PDT) Date: Wed, 20 Mar 2019 15:51:15 +0100 In-Reply-To: Message-Id: <7747d94301bcb30de0026e9434a1e1879f84aae7.1553093421.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.21.0.225.g810b269d1ac-goog Subject: [PATCH v13 01/20] uaccess: add untagged_addr definition for other arches From: Andrey Konovalov To: Catalin Marinas , Will Deacon , Mark Rutland , Robin Murphy , Kees Cook , Kate Stewart , Greg Kroah-Hartman , Andrew Morton , Ingo Molnar , "Kirill A . Shutemov" , Shuah Khan , Vincenzo Frascino , Eric Dumazet , "David S. Miller" , Alexei Starovoitov , Daniel Borkmann , Steven Rostedt , Ingo Molnar , Peter Zijlstra , Arnaldo Carvalho de Melo , Alex Deucher , " =?utf-8?q?Christian_K=C3=B6nig?= " , "David (ChunMing) Zhou" , Yishai Hadas , Mauro Carvalho Chehab , Jens Wiklander , Alex Williamson , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, kvm@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 , Luc Van Oostenryck , Dave Martin , Kevin Brodsky , Szabolcs Nagy , Andrey Konovalov Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To allow arm64 syscalls to accept tagged pointers from userspace, we must untag them when they are passed to the kernel. Since untagging is done in generic parts of the kernel, the untagged_addr macro needs to be defined for all architectures. Define it as a noop for architectures other than arm64. Acked-by: Catalin Marinas Signed-off-by: Andrey Konovalov --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 76769749b5a5..4d674518d392 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -99,6 +99,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #include #include +#ifndef untagged_addr +#define untagged_addr(addr) (addr) +#endif + #ifndef __pa_symbol #define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0)) #endif