From owner-freebsd-virtualization@freebsd.org Fri Jan 18 15:06:42 2019 Return-Path: Delivered-To: freebsd-virtualization@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 8F07714A151F for ; Fri, 18 Jan 2019 15:06:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 296AD9385B for ; Fri, 18 Jan 2019 15:06:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id DD92514A151D; Fri, 18 Jan 2019 15:06:41 +0000 (UTC) Delivered-To: virtualization@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 CA8F514A151C for ; Fri, 18 Jan 2019 15:06:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 64C5A93858 for ; Fri, 18 Jan 2019 15:06:41 +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 mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id A4DE0FBE for ; Fri, 18 Jan 2019 15:06:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x0IF6e9m089298 for ; Fri, 18 Jan 2019 15:06:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x0IF6eu6089285 for virtualization@FreeBSD.org; Fri, 18 Jan 2019 15:06:40 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 235010] bhyve: Linux guest crash due to unhandled MSR Date: Fri, 18 Jan 2019 15:06:40 +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: 12.0-RELEASE X-Bugzilla-Keywords: bhyve X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: rgrimes@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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: 2.1.29 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: Fri, 18 Jan 2019 15:06:42 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235010 Rodney W. Grimes changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rgrimes@FreeBSD.org --- Comment #4 from Rodney W. Grimes --- (In reply to Conrad Meyer from comment #2) Your correct in that bhyve does very little to hide CPUID bits of the host = from the guest and this has caused us these types of problems. This only gets w= orse with the addition of mitigation bits. What we need is a general mechanism to deal with this that would allow both masking and setting of any of the CPUID bits, something along the lines of (HOST & mask) | force for each of the cpuid values. This would even give us the ability to change processor model and type. IIRC this is how vmware implements the "create least common denominator" CP= Uid accross a cluster of servers so that you can do live migration. --=20 You are receiving this mail because: You are the assignee for the bug.=