From owner-freebsd-arm@freebsd.org Tue Dec 3 17:19:49 2019 Return-Path: Delivered-To: freebsd-arm@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D356B1B676F; Tue, 3 Dec 2019 17:19:49 +0000 (UTC) (envelope-from rysto32@gmail.com) Received: from mail-qv1-xf34.google.com (mail-qv1-xf34.google.com [IPv6:2607:f8b0:4864:20::f34]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47S7yY5JNmz4fk0; Tue, 3 Dec 2019 17:19:49 +0000 (UTC) (envelope-from rysto32@gmail.com) Received: by mail-qv1-xf34.google.com with SMTP id p2so1836162qvo.10; Tue, 03 Dec 2019 09:19:49 -0800 (PST) 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=+r5OFJvChiGwzNRq/ShmwtXJbEg537fe7GtixqYkbE8=; b=mP/kLg9bNTQ2Ln/UCtfqXSJxHSlRJvswIY4soWnz3LRl7bw9XRes9PoOHpSv0zCuTw 8Yv0odynNaQzsnyNOCShQYK9yKgtjuruVdSf5RkfGjZdsMMKbLvC+fSAR6UL07y4jSTF jQOQhu46jvA1NbRh8dGCSxMtnAn5I6jMevF+aEoCK9uIcvBtMVb7E+5C6MCy1V67wsBi +e8LYuEYttISS3Za1oYoXRCTiG6t6IqefO9YlVrNSR5ZRR74SLsZV5YjfJqnXovjeHVJ thlNN35cPBJKr9+70WUV1r3fytvqE+DN0MCUgCqiMZEQH+RlBC0MtFBnMr2vXG6ljU7J KPLg== 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=+r5OFJvChiGwzNRq/ShmwtXJbEg537fe7GtixqYkbE8=; b=N8eX1SqgJ6IxeT9P1T06hMIlqXUPFq5sKPQCUzpn4VPwcvPgr5PZb3qHMle+MRaOjl D+PuK1C+bdsxD+2FFbL6VoWvRsABqN0HLBysvcbMB3RaIyajKO9w2mxn/I5GSimqwJYw /TqF03IOpkFDQAyNy+/WjueV9VuBuKMhTKMzDE+k8SeSkDcmdz5RnTT6hUwZYliZzWOF uUde8cVo5vkhYVUZjfPTqA3rIW6KTU+kI/ujpaEDk2/hQSKo7/odv3+bs1mv8dRyQm4X yVq+uvslSPmhqqMq0245G3A/Y/ceV61bmjS3bEKkmrIjX/o9N9Z9nLagu/q0hBl868Kx IAoQ== X-Gm-Message-State: APjAAAVJSCBkIneQYDUWj/bcuagtUNdd5tvDqEF1hIO4CX26/nVcnsPA +FXhF6nkWpYMe6t5QbmsQ7oxLrAUXTE9FETDim1X6A== X-Google-Smtp-Source: APXvYqyZdjobZRvS2GTKqP3sbfUoW9xQMiXBT5MgeH4t0+ilJ/OmFtk8QfeRIOFxOTDY3xGfju/E5btSK8HOblKuHe8= X-Received: by 2002:a0c:8a93:: with SMTP id 19mr6234282qvv.157.1575393582371; Tue, 03 Dec 2019 09:19:42 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Ryan Stone Date: Tue, 3 Dec 2019 12:19:31 -0500 Message-ID: Subject: Re: arm64 as Tier 1 for FreeBSD 13 To: Ed Maste Cc: freebsd-arch , freebsd-arm , Hiroki Sato Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 47S7yY5JNmz4fk0 X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-5.99 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-0.995,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; REPLY(-4.00)[] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Dec 2019 17:19:49 -0000 On Tue, Dec 3, 2019 at 9:44 AM Ed Maste wrote: > > New features which are not inherently platform-specific will be fully > > functional on all Tier 1 architectures. > > This introduces some additional commitments on those developing new > features, but in practice I believe we already generally expect new > functionality to work on arm64. For eBPF, Sato-san is working on a JIT compiler. Depending on the how it winds up being implemented, it may only support JIT'ing for amd64 (one possibility being floated is an LLVM-based implementation, in which case arm64 support is a lot easier). If arm64 has to use an interpreter to run eBPF code rather than JIT'ing it, is that acceptable for a tier-1 platform?