From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 541E7EB64DA for ; Fri, 14 Jul 2023 10:21:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235467AbjGNKVC (ORCPT ); Fri, 14 Jul 2023 06:21:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236082AbjGNKVB (ORCPT ); Fri, 14 Jul 2023 06:21:01 -0400 Received: from mail-ej1-x64a.google.com (mail-ej1-x64a.google.com [IPv6:2a00:1450:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55F3F2702 for ; Fri, 14 Jul 2023 03:20:59 -0700 (PDT) Received: by mail-ej1-x64a.google.com with SMTP id a640c23a62f3a-993d500699fso96699466b.1 for ; Fri, 14 Jul 2023 03:20:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689330058; x=1691922058; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=ake/2lNPSYG4Kup6Znr90jxcuDjnCQa+kK9QxHmxIwE=; b=FdFgSbE9EX08KPCV3DFRa0KauNWmUSSKQuD9KCfK4mOB1MOb00hUTblNSomfgkxhXE lktUE68J2GJstAUj/3c+jsVLoFGKsyNmD+spCDoSEq9pliOoU/eTeGKuECVOQJrW96JW 0DVOb7zMv+7uYhP2k11Kxl4mudnbg+7chPKt8ON/beLgn35QBKRpxoMgV1d5B1uNfFG3 AgxMMV52IQLUcoM3lpUr88qrhOm889EDxsbpie2PXgMV/VEPfl+Rvtil+sLok6f8e1nb hqEwDY8sB3TJuxoDWtQB6lvtOAXTfuQNn+0jvX40UPp1Eoy/88cODPzkhRG3lBSO3Q1c ul/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689330058; x=1691922058; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ake/2lNPSYG4Kup6Znr90jxcuDjnCQa+kK9QxHmxIwE=; b=GUDc4Hg0PSccuLSDcf5jOBFeUMu1ZQcF6ud1E6m3LvCLVGhrXOj5maD80Lcnt1gp/+ 8G3q/KUyD/y4uJMaF8fGR7GnPTdfss7mI1qpws7BPYQQlf+NoS5AfhfGj3EjwOoTnic5 3X+Dcnih5wiQTfYkaezWK1EnGY+8Gm+iohQx5K6McVi7LUsy62PXy9lN5MYa+iGv0Me/ 9eWc1M7WVrcS8lP5t2jmhmArsBGJwjvRHW4g7WtAql++Op/Q6SBzPfPlEtEj1SO9WIuG ASxePZzfNj0gjw6dENIZX5PNjhcLowS5byEywROo3zNncxPreiSj9ilMdLnQnL34Qihc 35RA== X-Gm-Message-State: ABy/qLZS73p/38w6fX8XcjzBOK/VHpSohshpKLN3KJpIZQzha52eL5ow tmDJeqD2DIy8NUzxDJjUuxvldS8M9bAK7/A= X-Google-Smtp-Source: APBJJlFUTjwiYHQXGcSMMNCtJzQc7XCp95jN1C2fnAoH9M2eakhZaTVLYzm8MTgye2tlwRUOsp8FX+gnfVMrb1M= X-Received: from aliceryhl.c.googlers.com ([fda3:e722:ac3:cc00:31:98fb:c0a8:6c8]) (user=aliceryhl job=sendgmr) by 2002:a17:906:8a62:b0:978:67a2:f503 with SMTP id hy2-20020a1709068a6200b0097867a2f503mr8783ejc.12.1689330057916; Fri, 14 Jul 2023 03:20:57 -0700 (PDT) Date: Fri, 14 Jul 2023 10:15:01 +0000 In-Reply-To: <20230714-classless_lockdep-v1-1-229b9671ce31@asahilina.net> Mime-Version: 1.0 References: <20230714-classless_lockdep-v1-1-229b9671ce31@asahilina.net> X-Mailer: git-send-email 2.41.0.255.g8b1d071c50-goog Message-ID: <20230714101501.2194205-1-aliceryhl@google.com> Subject: Re: [PATCH RFC 01/11] rust: types: Add Opaque::zeroed() From: Alice Ryhl To: lina@asahilina.net Cc: alex.gaynor@gmail.com, alyssa@rosenzweig.io, asahi@lists.linux.dev, benno.lossin@proton.me, bjorn3_gh@protonmail.com, boqun.feng@gmail.com, daniel@ffwll.ch, gary@garyguo.net, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, marcan@marcan.st, masahiroy@kernel.org, nathan@kernel.org, ndesaulniers@google.com, nicolas@fjasle.eu, ojeda@kernel.org, rust-for-linux@vger.kernel.org, sven@svenpeter.dev, trix@redhat.com, wedsonaf@gmail.com, Alice Ryhl Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Asahi Lina writes: > Opaque types are internally MaybeUninit, so it's safe to actually > zero-initialize them as long as we don't claim they are initialized. > This is useful for many FFI types that are expected to be zero-inited by > the user. > > Signed-off-by: Asahi Lina LGTM. This is useful on its own. Reviewed-by: Alice Ryhl