From owner-freebsd-ppc@freebsd.org Mon Apr 22 06:06:40 2019 Return-Path: Delivered-To: freebsd-ppc@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 DCE291590328 for ; Mon, 22 Apr 2019 06:06:39 +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 76FFA732D5 for ; Mon, 22 Apr 2019 06:06:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 341E91590327; Mon, 22 Apr 2019 06:06:39 +0000 (UTC) Delivered-To: ppc@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 EA82B1590326 for ; Mon, 22 Apr 2019 06:06:38 +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 7A15F732D2 for ; Mon, 22 Apr 2019 06:06:38 +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 AE8D81BC0E for ; Mon, 22 Apr 2019 06:06:37 +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 x3M66bae009672 for ; Mon, 22 Apr 2019 06:06:37 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x3M66boS009659 for ppc@FreeBSD.org; Mon, 22 Apr 2019 06:06:37 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: ppc@FreeBSD.org Subject: [Bug 233863] r345425 on PowerMac G5 may require kern.smp.disabled=1 and must set usefdt=1 which causes net interface reorder Date: Mon, 22 Apr 2019 06:06:37 +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: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: marklmi26-fbsd@yahoo.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: ppc@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-ppc@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Apr 2019 06:06:40 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233863 --- Comment #25 from Mark Millard --- (In reply to Mark Millard from comment #24) As for the usefdt mode G3 exploration: The debug kernel did not report anything special. Disabling swap made no general change to the behaviors. An interesting comparison is: Under the debug kernel I got a machine check, reported to be at the end of: bl 00503bf0 <__mtx_lock_flags> rlwinm r26,r21,2,0,29 lwz r9,-32748(r30) lwz r9,0(r9) lwzx r29,r26,r9 cmpwi cr7,r29,0 beq- cr7,008e9c8c lwz r0,52(r29) cmpw cr7,r0,r28 (But machine-checks are imprecise.) Under a non-debug kernel I got a Data Storage Interrupt, reported to be at the end of: bl 0054da44 <__mtx_lock_sleep> rlwinm r26,r21,2,0,29 lwz r9,-32744(r30) lwz r9,0(r9) lwzx r29,r26,r9 cmpwi cr7,r29,0 beq- cr7,0098ef74 lwz r0,52(r29) Both of these are tied to: mtx_lock(&moea_table_mutex); LIST_FOREACH(pvo, &moea_pvo_table[ptegidx], pvo_olink) { if (pvo->pvo_pmap =3D=3D pm && PVO_VADDR(pvo) =3D=3D va) { with the "lwz r0,52(r29)" appearing to be the access for pvo->pvo_pmap from what I can tell. In turn it suggests that, on the G3, values for pvo result that are inappropriate. (Not that I have a clue why.) --=20 You are receiving this mail because: You are the assignee for the bug.=