From owner-freebsd-virtualization@freebsd.org Tue Dec 5 20:21:06 2017 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9249BE800CB for ; Tue, 5 Dec 2017 20:21:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7FED06D533 for ; Tue, 5 Dec 2017 20:21:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id vB5KL4fU066842 for ; Tue, 5 Dec 2017 20:21:06 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 213333] FreeBSD 11-RELEASE fails to boot under KVM/Qemu Date: Tue, 05 Dec 2017 20:21:05 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: cam@neo-zeon.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Dec 2017 20:21:06 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213333 --- Comment #17 from Cameron --- I've managed to work around this.=20 There's 2 issues here: 1. Rather than using an Opteron_* model in kvm for the CPU, etc. Use kvm64. Others may work as well. I believe this alone will Just Work if you haven't been building from source. 2. Did you build everything/anything from source? You probably don't want to set=20 'CPUTYPE?=3Dnative', etc in /etc/make.conf (or perhaps you can find somethi= ng "safe" to set it to?).=20 If you are building from source AND had CPUTYPE set to something like Opteron_*, you'll probably need to rebuild your *current* working version before you can attempt to switch the CPU model to 'kvm64'. An Opteron optim= ized build won't even boot if you set the CPU model to 'kvm64' IIRC. First, unset CPUTYPE if you have it set and then rebuild _everything_. Rebu= ild world, kernel, and ports. Once you've confirmed that everything still works (you can reboot, your daemons still come up, etc), you should be able to sw= itch your virtual CPU model to kvm64. Once your system runs with with kvm64 set, you can build the newer version = of FreeBSD that you want to move to. To be safe, try the newer kernel first (as you should in general anyway) to confirm that it's working without surprise= s. Seeing as how I found that much more than the kernel and the base system we= re affected, this could very well be a compiler regression for the Opteron tar= get. Anyway, hope this helps! --=20 You are receiving this mail because: You are the assignee for the bug.=