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 X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BD69C433DF for ; Mon, 19 Oct 2020 08:31:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 80B342225A for ; Mon, 19 Oct 2020 08:31:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ihof0CDE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 80B342225A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55612 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kUQa6-00025Q-73 for qemu-devel@archiver.kernel.org; Mon, 19 Oct 2020 04:31:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34276) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUQYQ-00015c-OC for qemu-devel@nongnu.org; Mon, 19 Oct 2020 04:30:07 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:40079) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kUQYM-0004fl-GO for qemu-devel@nongnu.org; Mon, 19 Oct 2020 04:30:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603096199; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Hsc3fFHAR3r6TZ6h0ZE8QOMSPDwdyYyBTeCZV2JmWSU=; b=Ihof0CDEiT6hDDlRMqLtYeMyj/3YjIg22qAoezh9+g+oAv2Tf0FLk/MQrdYEE+JNz7nTlK GCrk/FBB+QgpJ9NGJuCrMEvxQ+1v33Ym84gaS0ybpgbZZd4FZ8rwuZH7zUxoIk7xjiMB3D hHv4SOJhxzsqT4bLyGKPKKHWOoAvOeE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-95-rR_Sil-wNbCMckA5GZhIcQ-1; Mon, 19 Oct 2020 04:29:56 -0400 X-MC-Unique: rR_Sil-wNbCMckA5GZhIcQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 51C20393BA; Mon, 19 Oct 2020 08:29:55 +0000 (UTC) Received: from thuth.remote.csb (ovpn-114-6.ams2.redhat.com [10.36.114.6]) by smtp.corp.redhat.com (Postfix) with ESMTP id 518CF75132; Mon, 19 Oct 2020 08:29:54 +0000 (UTC) Subject: Re: [PATCH v2 0/9] iOS and Apple Silicon host support To: Joelle van Dyne , qemu-devel@nongnu.org, Peter Maydell References: <20201019013928.72770-1-j@getutm.app> From: Thomas Huth Message-ID: Date: Mon, 19 Oct 2020 10:29:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20201019013928.72770-1-j@getutm.app> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=thuth@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/19 01:44:30 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 19/10/2020 03.39, Joelle van Dyne wrote: > These set of changes brings QEMU TCG to iOS devices and future Apple Silicon > devices. They were originally developed last year and have been working in the > UTM app. Recently, we ported the changes to master, re-wrote a lot of the build > script changes for meson, and broke up the patches into more distinct units. > > A summary of the changes: > > * `CONFIG_IOS` and `CONFIG_IOS_JIT` defined when building for iOS and > iOS specific changes (as well as unsupported code) are gated behind it. > * A new dependency, libucontext is added since iOS does not have native ucontext > and broken support for sigaltstack. libucontext is available as a new option > for coroutine backend. > * On stock iOS devices, there is a workaround for running JIT code without > any special entitlement. It requires the JIT region to be mirror mapped with > one region RW and another one RX. To support this style of JIT, TCG is changed > to support writing to a different code_ptr. These changes are gated by the > `CONFIG_IOS_JIT`. > * For (recent) jailbroken iOS devices as well as upcoming Apple Silicon devices, > there are new rules for applications supporting JIT (with the proper > entitlement). These rules are implemented as well. > > Since v2: > > * Changed getting mirror pointer from a macro to inline functions > * Split constification of TCG code pointers to separate patch > * Removed slirp updates (will send future patch once slirp changes are in) > * Removed shared library patch (will send future patch) > > -j > > osy (9): > configure: option to disable host block devices > configure: cross-compiling without cross_prefix > qemu: add support for iOS host > coroutine: add libucontext as external library > tcg: add const hints for code pointers > tcg: implement mirror mapped JIT for iOS > tcg: mirror mapping RWX pages for iOS optional > tcg: support JIT on Apple Silicon > block: check availablity for preadv/pwritev on mac Is there maybe also a way to compile-test this automatically in a macOS container on Cirrus-CI or Travis, too? ... otherwise I'm a little bit afraid that this support might bit-rot quite fast again, since most developers don't have the corresponding setup... Thomas