The following reply was made to PR port-i386/35618; it has been noted by GNATS.

From: "Cherry G. Mathew" <cherry.g.mathew@gmail.com>
To: gnats-bugs@netbsd.org
Cc: port-i386-maintainer@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: port-i386/35618: ioapic hangs a kernel boot
Date: Sun, 25 Feb 2007 10:45:28 +0000

 On 2/15/07, Bernd Ernesti <pr200701@veego.de> wrote:
 > >Number:         35618
 > >Category:       port-i386
 > >Synopsis:       ioapic hangs a kernel boot
 > >Confidential:   no
 > >Severity:       non-critical
 > >Priority:       high
 > >Responsible:    port-i386-maintainer
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Thu Feb 15 22:15:00 +0000 2007
 > >Originator:     Bernd Ernesti
 > >Release:        NetBSD 4.99.7
 > >Organization:
 > >Environment:
 > System: NetBSD 4.99.7
 > Architecture: i386
 > Machine: i386
 > >Description:
 >         The kernel stops after printing the "ioapic0: enabling" line.
 >         Btw, there is no manpage about ioapic.
 >
 > >How-To-Repeat:
 >         Compile an ACPI kernel with "ioapic* at mainbus? apid?" and notice
 >         that it stops after the "ioapic0: enabling" output.
 >         e.g. GENERIC.MPACPI
 >
 >         An older kernel (<3.99.22) or a kernel without ioapic doesn't stop.
 >
 >         This is an Gigabyte GA-K8NSC-939 board.
 >         dmesg log of the last working kernel before the changes mentioning
 >         below and an acpi dump can be found on ftp.netbsd.org:~veego/tmp/k8nsc/
 >
 >         I could pin it down to the following source changes where this problem
 >         started:
 >
 > Module Name:    src
 > Committed By:   christos
 > Date:           Tue Jul  4 00:30:24 UTC 2006
 >
 > Modified Files:
 >         src/sys/arch/amd64/amd64: mainbus.c
 >         src/sys/arch/amd64/conf: GENERIC GENERIC_ACPI INSTALL_ACPI
 >         src/sys/arch/i386/conf: GENERIC GENERIC.MP GENERIC.MPACPI INSTALL.MP
 >             VIRTUALPC
 >         src/sys/arch/i386/i386: mainbus.c
 >         src/sys/arch/x86/conf: files.x86
 >         src/sys/arch/x86/include: intr.h mpacpi.h mpbiosvar.h mpconfig.h pic.h
 >         src/sys/arch/x86/pci: pci_intr_machdep.c pci_machdep.c
 >         src/sys/arch/x86/x86: acpi_machdep.c i8259.c intr.c ioapic.c mpacpi.c
 >             mpbios.c
 >         src/sys/dev/acpi: acpi.c acpi_quirks.c acpivar.h files.acpi
 >         src/sys/dev/pci: pccbb.c
 > Added Files:
 >         src/sys/dev/acpi: acpi_pci_link.c
 >
 > Log Message:
 > Apply fvdl's acpi pci interrupt configuration code.
 > - MPACPI is no more.
 > - MPACPI_SCANPCI -> ACPI_SCANPCI
 >
 > >Fix:
 >
 >
 
 Possible fix below.
 
 --- acpi_machdep.c.~1.13.~      2007-02-22 02:00:50.000000000 +0000
 +++ acpi_machdep.c      2007-02-25 01:34:09.000000000 +0000
 @@ -152,7 +152,7 @@
        for (i = 0; i < mp_nbus; i++) {
                for (mip = mp_busses[i].mb_intrs; mip != NULL;
                     mip = mip->next) {
 -                       if (mip->global_int == (int)InterruptNumber) {
 +                       if (mip->bus_pin  == (int)InterruptNumber) {
                                h = mip->ioapic_ih;
                                if (APIC_IRQ_ISLEGACY(h)) {
                                        irq = APIC_IRQ_LEGACY_IRQ(h);
 @@ -213,6 +213,7 @@
                mip->flags &= ~3;
                mip->flags |= MPS_INTPO_ACTLO;
                mip->redir |= IOAPIC_REDLO_ACTLO;
 +               pin = mip->bus_pin;
        }
  #endif
 
 
 -- 
 ~Cherry