From patchwork Fri Mar 15 19:51:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 1057228 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="NsZbFgqg"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44Lbqk6YJbz9s71 for ; Sat, 16 Mar 2019 06:53:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727270AbfCOTvv (ORCPT ); Fri, 15 Mar 2019 15:51:51 -0400 Received: from mail-io1-f74.google.com ([209.85.166.74]:44616 "EHLO mail-io1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727161AbfCOTvr (ORCPT ); Fri, 15 Mar 2019 15:51:47 -0400 Received: by mail-io1-f74.google.com with SMTP id c2so7805423ioh.11 for ; Fri, 15 Mar 2019 12:51:47 -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=7EwJOZO2FU3roQl0F5aaHfBG2l97MDWb8Nx8DHL3tHk=; b=NsZbFgqg7rNL+MmKx3BQKEQu20uV5j38Y50xV/nkSWdpaI1ml/U6N36zAaOr/fw5UA vw0RHRh7TFVUW8EczyoyJgPl2GwQ0O2Y3mdoA35Hyc638cKh6Ou6T8eYWBn4JvcpMD/p rAobGvHGGcaX0d5KUxoitmIQyCm1jnvtMKLMyUhfKXJwo6H8C9LXAnbI3Vm9NBlauUvF LSPFoGZmvnqqM1DaPRlnN62YYv9Ww/FkPY+qI6Xd7c1DGMrBJfACmaSSGw3vWzqTDpi4 0fO7tv8nv58nySaGO3aBtIsMUSYoC0bWVWTZpEnNl/6BuoGd6099E0jO7AssN7waL7VF i1Ag== 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=7EwJOZO2FU3roQl0F5aaHfBG2l97MDWb8Nx8DHL3tHk=; b=LC4Mj8NI9Cs4qwWEZBmHn2h4FXtls1UIPQ1e16vtR3clOpfhBljJOaZ7gIKLvyiFbj 58efwHZCtGKf4BSw0vIXmHSZNXRVbJPk5LbreNW8PcacM8VgOqROtCrEHOskJU5msxai 5FQvWxubjAOLkHxJzJ83we81Tshh2RelaHLYj8TqkD8O1BD2fl2ndwxKA5osK2kW9em4 gIzspJFTh+ekiHHME+C8FN9JhNV6KexWULj4idGJmUoGo/VjFOSNLVMEQjxwyVnzBUQ+ MPJsOkBY+4k+14z0KN709FmOJ/Vb/ddpWAWTiPT4/ih0dhgBGaqHjwQMRwZNFqdy+gjD rzqA== X-Gm-Message-State: APjAAAWvGkYbIvXoa/492KB0F1rpX2Vsk/pMas8asT5y+F7/XtvMJech O4TLgxQ5mPt1OHuAa2po0OmmllqCqm8S5LmZ X-Google-Smtp-Source: APXvYqw3EhdS69JFOaj1SqCWxq2uMXIiNWdBlJ3prBk3wjQoeZqkO0NrFGiKQ0BULG0Vahh3MxRaQ9/Jyb5Vnlog X-Received: by 2002:a24:7bd3:: with SMTP id q202mr100068itc.32.1552679506915; Fri, 15 Mar 2019 12:51:46 -0700 (PDT) Date: Fri, 15 Mar 2019 20:51:25 +0100 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.21.0.360.g471c308f928-goog Subject: [PATCH v11 01/14] 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 , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, netdev@vger.kernel.org, bpf@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: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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