From patchwork Tue Apr 30 13:24:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 10923637 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 B0A0714DB for ; Tue, 30 Apr 2019 13:28:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A06F528358 for ; Tue, 30 Apr 2019 13:28:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9448428AE7; Tue, 30 Apr 2019 13:28:12 +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 351E428358 for ; Tue, 30 Apr 2019 13:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727725AbfD3NZW (ORCPT ); Tue, 30 Apr 2019 09:25:22 -0400 Received: from mail-yw1-f73.google.com ([209.85.161.73]:40541 "EHLO mail-yw1-f73.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727599AbfD3NZV (ORCPT ); Tue, 30 Apr 2019 09:25:21 -0400 Received: by mail-yw1-f73.google.com with SMTP id y66so624046ywy.7 for ; Tue, 30 Apr 2019 06:25:20 -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=Yt+PWI13/w7NMYz3zwPrNGqq+ReXtpTWddPqmKmBKgk=; b=jG67MQO6uSTq+PQJ7NLS3u3pGPqYxBD6j6Z7zSYau7uP7jvgt3bFEq3faUxv1qOiIb Lhjg89Y6A0R/eNow3E4oC26RwU4x5nya0AVoMdWDIBSbYBBhFLCViwOATovkHqYFgw83 hOVUMM4j6unbJMoC5S4qfPmdZGJuwasxoQN5pLBzNoODYCmMWIdN+DK/0OhTFTFrX99t 6EDwehqEld5biejrj0QAkLSZAfR6m8nobezuReC4ugk/eXbqiTH4l+ivloQAzM7wUwIe NZAar432hbtNkfGtL2tuOjYFn681Ww9UC8SmNz4UpJpUm1tSs7E6peMLsrX4yxW2SbA8 caHA== 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=Yt+PWI13/w7NMYz3zwPrNGqq+ReXtpTWddPqmKmBKgk=; b=bUlfp9ofAtvBD3KoDv8chdLtMs8T4CuERcCfMxfeq+O+1vlOATRiUPI896Skr2lSi+ tWjat+/jLrbhs4xWbwoHzpvYbQQj3x850rdNhT5Jn4zmFnfEt7k5RUrqX/E8drhLTf8I 2dN/Y5CvTnuR4Ny1OBjaiK+oH1bbuk/BLqST+26//6H4v9iOTAKhXxFI1wJm/9EDRxfv cKQBcfi5o3U0stZRt/tq0bkXvkdm2pD1q81w2MyDqnRhOBsa7GddpJSAZpb5TKO3SkO7 EZkBTszzWJvfqNWJfGom5JrkK0i+vrvl992ZvRIs4SmFdEez32qI0bx+Zm7A4Dc51idD Hhug== X-Gm-Message-State: APjAAAUYJF9TPJGM+FDrLPPOgDQRsiJFViFH6ArPg7vhOlvJnN9sNGbK qkhYGUr+j5U6Y3rpe2cK9yhUAk2h7wGkI7ST X-Google-Smtp-Source: APXvYqzn+VCXcz3/MPYUKI1STEW4oOzSku7o6dMmFF+1zuaxsiuVuMrbdGrvK+1IRDapYK9+TGfb+TbRJGhClYr2 X-Received: by 2002:a81:3d51:: with SMTP id k78mr56599045ywa.106.1556630720203; Tue, 30 Apr 2019 06:25:20 -0700 (PDT) Date: Tue, 30 Apr 2019 15:24:57 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog Subject: [PATCH v14 01/17] uaccess: add untagged_addr definition for other arches From: Andrey Konovalov To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@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 Cc: Catalin Marinas , Vincenzo Frascino , Will Deacon , Mark Rutland , Andrew Morton , Greg Kroah-Hartman , Kees Cook , Yishai Hadas , Kuehling@google.com, Felix , Deucher@google.com, Alexander , Koenig@google.com, Christian , Mauro Carvalho Chehab , Jens Wiklander , Alex Williamson , Leon Romanovsky , Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Robin Murphy , 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 6b10c21630f5..44041df804a6 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