From owner-freebsd-hackers@freebsd.org Tue Jul 31 21:49:29 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8A1B41065F2B for ; Tue, 31 Jul 2018 21:49:29 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-pl0-x235.google.com (mail-pl0-x235.google.com [IPv6:2607:f8b0:400e:c01::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EFA747F457 for ; Tue, 31 Jul 2018 21:49:28 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-pl0-x235.google.com with SMTP id u11-v6so2206609plq.5 for ; Tue, 31 Jul 2018 14:49:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:subject:message-id:mime-version :content-disposition:user-agent; bh=C6meedY3x/HxFigro+2OpCah0XglvwDixFpHsY8vmwQ=; b=a/O2pZbnYem8Y1Gpwi/LCFoaWDeMOVpNzEgfnyb83Gxw60NNIoUG4zE/CR+5+dW7rf TC6xdgkNopzboc/WY6O9O0bEB8k3OdUvNXnHKUlRVI1+zDaQt3qfJCb/dEH9idaYrrsH lrlfJowsLgTTnMioz/3qeanyKUwg7aHKL1vJ/paFDE4sAVjMQ8BLpnpvqcvJ+m7/Vyd/ 5dWG374BYNeU8LQ1b0KKPVyKwjnCLpOOWmZrZJt0ENfEn6tDzDMUNJjz2mqUKT0+poz2 2DAQBcKry0J5cKzGAwNTFb4tmVjta04rYJ6fJXKTxvFxAhlCmdknci83ZZGECKduJuXa jeQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:subject:message-id :mime-version:content-disposition:user-agent; bh=C6meedY3x/HxFigro+2OpCah0XglvwDixFpHsY8vmwQ=; b=EWbHHSRLLNHuM1gXyyko0WVu6c5Rx9fnB3f6ZUue7jrg3/8MpjjYqqVDLUep47+i5E 3JeVY/+Zo8pw4VEk+Hzu4m7Tc5nVHvTZ9ndJjaiMZVmCae8qOtvEQ+tR8PFDG/gKL2xb VEFWwTOroJ3w55J69L/Y9fMj/RIhFnHj2PYCQKua9fgyFDw1xAG7Reg9V8qGumLLAMn6 jz7KZTN1qaw7/pdzFWfEid2mXKlguxm39htS+BR/ieOXkIrICzl9+LLplZIpyvB0/qHo Qfmp3YrdqjWQBrocjwTPauJksaFIPFBjegzNFfF+HtEym0ADlQYZ62ieo7m3G2FBqmqo Upqg== X-Gm-Message-State: AOUpUlEFM6n280Sp1wZC0DE4kOHYIaFSnnZbb4Z5PvheDrB5n3X57VDU 6jvWSZvem5oknBJ34NQ5vv3qL1my X-Google-Smtp-Source: AAOMgpf2WkOmSeY29Ua0ANRPjsSXO/HcL1ee1cLYGCBoiG8AIsITdTQaXhhijZu8rvJ2Sj8O/UNHjg== X-Received: by 2002:a17:902:22e:: with SMTP id 43-v6mr16279603plc.118.1533073767342; Tue, 31 Jul 2018 14:49:27 -0700 (PDT) Received: from raichu (toroon0560w-lp130-09-70-52-224-239.dsl.bell.ca. [70.52.224.239]) by smtp.gmail.com with ESMTPSA id s27-v6sm29213707pfk.133.2018.07.31.14.49.25 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 31 Jul 2018 14:49:26 -0700 (PDT) Sender: Mark Johnston Date: Tue, 31 Jul 2018 17:49:20 -0400 From: Mark Johnston To: freebsd-hackers@freebsd.org Subject: COMPAT_43 users? Message-ID: <20180731214920.GA95743@raichu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Jul 2018 21:49:29 -0000 The COMPAT_43 kernel option, which enables syscall support for 4.3BSD binaries, hasn't been enabled in the standard kernel configs for well over a decade, and doesn't appear to be a dependency of any other kernel features. Nonetheless, the kernel contains quite a bit of code to support this option. Does anyone use it in modern versions of FreeBSD or have any arguments for keeping it?