From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Linux boot issue: "8254 timer not connected to IO-APIC" Date: Sun, 02 Nov 2008 12:58:52 +0100 Message-ID: <490D95FC.3010700@web.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4AE71BF2570374CA0DD8AABD" Cc: Gleb Natapov To: kvm-devel Return-path: Received: from fmmailgate01.web.de ([217.72.192.221]:47607 "EHLO fmmailgate01.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753147AbYKBL67 (ORCPT ); Sun, 2 Nov 2008 06:58:59 -0500 Sender: kvm-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4AE71BF2570374CA0DD8AABD Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Hi, from time to time Linux fails to boot in my kvm boxes, complaining like this: [...] PAT WC disabled due to known CPU erratum. CPU: L1 I cache: 32K, L1 D cache: 32K CPU: L2 cache: 2048K CPU 0/0 -> Node 0 ACPI: Core revision 20080609 Parsing all Control Methods: Table [DSDT](id 0001) - 295 Objects with 45 Devices 104 Methods 6 Regions= tbxface-0596 [00] tb_load_namespace : ACPI Tables successfully acqui= red evxfevnt-0091 [00] enable : Transition to ACPI mode succes= sful =2E.TIMER: vector=3D0x30 apic1=3D0 pin1=3D0 apic2=3D-1 pin2=3D-1 =2E.MP-BIOS bug: 8254 timer not connected to IO-APIC =2E..trying to set up timer (IRQ0) through the 8259A ... =2E.... (found apic 0 pin 0) ... =2E...... failed. timer doesn't work through the IO-APIC - disabling NMI Watchdog! =2E..trying to set up timer as Virtual Wire IRQ... =2E.... failed. =2E..trying to set up timer as ExtINT IRQ... =2E.... failed :(. Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic= =3Ddebug and send a report. Then try booting with the 'noapic' option. The problem seems to be that timer_irq_works() fails, ie. less than 4 out of 10 PIC ticks made it to the guest within that test window. Gleb, is this something your anti-drift patches for the PIC would address as well? Jan --------------enig4AE71BF2570374CA0DD8AABD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkkNlgEACgkQniDOoMHTA+k3fQCfbvJr+lSYjzN4MDgz2KqTkV7j Ph4AnRilxMLqDUMmeXiIQaGSPFK6Bhj2 =IzKA -----END PGP SIGNATURE----- --------------enig4AE71BF2570374CA0DD8AABD--