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[23.128.96.18]) by mx.google.com with ESMTP id bt16si439249ejb.314.2020.09.23.11.52.27; Wed, 23 Sep 2020 11:52:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=pxc702TV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726799AbgIWStX (ORCPT + 99 others); Wed, 23 Sep 2020 14:49:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726460AbgIWStX (ORCPT ); Wed, 23 Sep 2020 14:49:23 -0400 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF128C0613CE; Wed, 23 Sep 2020 11:49:22 -0700 (PDT) Received: by mail-lj1-x242.google.com with SMTP id u4so501396ljd.10; Wed, 23 Sep 2020 11:49:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FbK+j42dWRK2s1x0oaQhi9+BRDAcyqnHMQWrUaVkakI=; b=pxc702TVV231b7p2aL4oSu3UqURyE2IucXBJdE0cFp1S9cLk62cjI12AtE9FGhF+xY dAM5vm5GIwLBZZafN/Capt0djv9hzrrfyBv4an1mIowfTj0YNNyBM3DGgqFZWyAJqJu8 L8gC9SKYsWuyf1iXkE58PO9qVl0DMP/A3MdP3dV4JMIet8VRwrTupmDJGnZ9D3+7aB/6 65kFdhFikXHJiJM3OgLDQ7at/xQ3njRllnV0vKj9vV9FfRDgkrjj71X59owhG5XuvNO5 ny4Pf+/WlM4dVRDmwqD6kl9s2SAQGXfJ7BnFxjBRBa5Wt/6F/35YzSw6xJ5kd4LELfE6 e8jQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FbK+j42dWRK2s1x0oaQhi9+BRDAcyqnHMQWrUaVkakI=; b=pYLhDvcQg8h+t19XRaGPwnMB+Rq9HYITG6FNQk6s/80CgJdUG7VBuyjocKrR3TBOux mSEP9apNwGxKI+dUAIPU9g1AHlJf6WwzNQhY5doTxIS0UVTXj55nfwQCv9kaY/GZzd7N oWTMRfDSxFWoWkUtpO1yNnbFQ8SZfaP+nCpDKCQMWAT8LgGkvzCTcyGm2675LfCveGGq wTFESPTRCOAwFHi20WEuDstvUqqTeZh4dYshjzKJVs/p6/W4Q7UhRZMWe3Q8VpLpxrSc f9uL4k0gi68pXMW6jwaXHyKrxgTCadFjXsxveVcHGXKmLg+cFPrK5OYP5z2E2cDr5t/+ lg2Q== X-Gm-Message-State: AOAM532IsT4rOfseFqXg7G3u2o4DBePINZ0L+8VhpucUAAcJTAY01QQg rMTNAiScPQy7TFzxF8cp8y7mPJr9nyo1O3biQik= X-Received: by 2002:a05:651c:cb:: with SMTP id 11mr419441ljr.2.1600886961295; Wed, 23 Sep 2020 11:49:21 -0700 (PDT) MIME-Version: 1.0 References: <20200923160156.80814-1-lmb@cloudflare.com> In-Reply-To: From: Alexei Starovoitov Date: Wed, 23 Sep 2020 11:49:09 -0700 Message-ID: Subject: Re: [PATCH bpf-next] bpf: explicitly size compatible_reg_types To: Andrii Nakryiko Cc: Lorenz Bauer , Alexei Starovoitov , Daniel Borkmann , kernel-team , Networking , bpf , open list Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 23, 2020 at 9:05 AM Andrii Nakryiko wrote: > > On Wed, Sep 23, 2020 at 9:03 AM Lorenz Bauer wrote: > > > > Arrays with designated initializers have an implicit length of the highest > > initialized value plus one. I used this to ensure that newly added entries > > in enum bpf_reg_type get a NULL entry in compatible_reg_types. > > > > This is difficult to understand since it requires knowledge of the > > peculiarities of designated initializers. Use __BPF_ARG_TYPE_MAX to size > > the array instead. > > > > Signed-off-by: Lorenz Bauer > > Suggested-by: Alexei Starovoitov > > --- > > I like this more as well. > > Acked-by: Andrii Nakryiko Applied. Thanks