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 0BB63C433F5 for ; Tue, 19 Apr 2022 10:47:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350775AbiDSKtn (ORCPT ); Tue, 19 Apr 2022 06:49:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350796AbiDSKtl (ORCPT ); Tue, 19 Apr 2022 06:49:41 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5585C1DA53 for ; Tue, 19 Apr 2022 03:46:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650365217; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=yxcu5ys80sCInub3Ls6SKzWV5PF7R9p2WfloWLeuP3g=; b=g1WUCGgLn0bsJsjNKPynZ3ibq54Cj7dgiYVhVezI6U1zBbdW+dtuaHh2NI+UG8+IKWTf73 KqF7Hnn2zYMtcFEaSj3oDABSlTU8nNDvBIEcpL7kKt+NE+JyXIgbBvA2vLPnBRthpWjbHr uF6rcqIEF+x5GFFKqUP33SP7duaOEDA= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-218-6rTzjl52ORuwoIN_FxXKgw-1; Tue, 19 Apr 2022 06:46:53 -0400 X-MC-Unique: 6rTzjl52ORuwoIN_FxXKgw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9B8B28EF6C1; Tue, 19 Apr 2022 10:46:52 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.193.187]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 40C9F4104961; Tue, 19 Apr 2022 10:46:50 +0000 (UTC) From: Florian Weimer To: Nick Desaulniers Cc: Arnd Bergmann , Masahiro Yamada , "Jose E. Marchesi" , linux-toolchains@vger.kernel.org, clang-built-linux , LKML , Carlos O'Donell Subject: Re: plumbers session on syscall wrapping and kernel header libc circular depdence? References: Date: Tue, 19 Apr 2022 12:46:48 +0200 In-Reply-To: (Nick Desaulniers's message of "Fri, 15 Apr 2022 10:48:13 -0700") Message-ID: <87lew14ag7.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: linux-toolchains@vger.kernel.org * Nick Desaulniers: > Hi Florian, Arnd, and Masahiro, > Jose and I are currently in the planning process to put together a > Kernel+Toolchain microconference track at Linux Plumbers Conference > this year (Sept 12-14) in Dublin, Ireland. I'm not sure if I will be able to travel by that time. > Would you all be interested in a session (if you're planning on > attending) discussing syscall wrapping for libc's and UAPI circular > dependency on the libc? > > Masahiro and I were recently discussing the feasibility of building > the kernel UAPI header tests with -nostdinc, but there are some > interesting complications perhaps worth sharing with others? To be honest, that doesn't seem to be a good use of a session slot. Surely we can figure out a way to solve this issue offline (and if it's a problem worth solving)? (I expect that using -nostdinc makes it more difficult to support compilers which are not GCC-compatible.) Thanks, Florian