From mboxrd@z Thu Jan 1 00:00:00 1970 From: OGAWA Hirofumi Subject: Re: nmi is broken? Date: Wed, 04 May 2011 02:45:15 +0900 Message-ID: <877ha7lluc.fsf@devron.myhome.or.jp> References: <87sjtbe7fz.fsf@devron.myhome.or.jp> <877hak1t1s.fsf@devron.myhome.or.jp> <4DB3C6D3.9040703@redhat.com> <4DB41696.6060606@web.de> <4DB7DA11.8040503@redhat.com> <871v0njhab.fsf@devron.myhome.or.jp> <4DB93A6D.3010703@redhat.com> <87sjt2ij8b.fsf@devron.myhome.or.jp> <87k4eeihdu.fsf@devron.myhome.or.jp> <87mxj7urb0.fsf@devron.myhome.or.jp> <4DBE6F6B.6090103@redhat.com> <8739kxgoo0.fsf@devron.myhome.or.jp> <4DBFCC81.9080401@redhat.com> <4DBFD3F5.8020406@redhat.com> <87hb9blxvt.fsf@devron.myhome.or.jp> <4DC004B6.3030503@redhat.com> <87bozjlo20.fsf@devron.myhome.or.jp> <4DC036DF.4010101@redhat.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Jan Kiszka , kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from mail.parknet.co.jp ([210.171.160.6]:54177 "EHLO mail.parknet.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753817Ab1ECRpT (ORCPT ); Tue, 3 May 2011 13:45:19 -0400 In-Reply-To: <4DC036DF.4010101@redhat.com> (Avi Kivity's message of "Tue, 03 May 2011 20:09:51 +0300") Sender: kvm-owner@vger.kernel.org List-ID: Avi Kivity writes: > On 05/03/2011 07:57 PM, OGAWA Hirofumi wrote: >> > >> > Usually yes, but we already have the PIT wired to INTIN0. I saw that >> > the kernel consults the mptable to see which pin to use, so with the >> > right BIOS magic we can get things to work. >> >> Um..., I'm confused more. If so, MADT doesn't say it. MADT says irq == 0 >> is pin == 2, this is one of reasons why linux is quite silent in >> check_timer(). And I can't see why it is working by pin == 2 for IOAPIC. >> >> If I can make time, I'll see what happens by pin == 2 and pin == 0 of >> IOAPIC in kvm. > > You're right. The default routing is INTIN0, but qemu changes it to > INTIN2 and tells kvm. > > So INTIN0 is free for the 8259A output. I see. Did it mean qemu changes the wiring, so kvm can't work for live migration with it? Thanks. -- OGAWA Hirofumi