Date: Fri, 25 Jul 2003 22:30:12 -0700 (PDT) From: none <jimd_NOSPAM@siu.edu> To: freebsd-i386@FreeBSD.org Subject: Re: i386/53200: 5.1-RC1 SMP kernel boot gags at "APIC_IO: Testing 8254 interrupt delivery" Message-ID: <200307260530.h6Q5UCMD067209@freefall.freebsd.org>
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The following reply was made to PR i386/53200; it has been noted by GNATS.
From: none <jimd_NOSPAM@siu.edu>
To: freebsd-gnats-submit@FreeBSD.org, jimd@siu.edu
Cc:
Subject: Re: i386/53200: 5.1-RC1 SMP kernel boot gags at "APIC_IO: Testing
8254 interrupt delivery"
Date: Sat, 26 Jul 2003 00:26:36 -0500
Adding some PRINTF's, as in the patch below, to
/usr/src/sys/i386/isa/clock.c, enabling KERNEL SMP and APIC (HT already
enabled in BIOS), rebuilding and installing kernel, and then rebooting
results in a persistent output of: "read_intr_count(8):0".
*** clock.c.orig Fri Jul 25 23:45:48 2003
--- clock.c Sat Jul 26 00:12:40 2003
***************
*** 999,1006 ****
if (apic_8254_trial) {
printf("APIC_IO: Testing 8254 interrupt delivery\n");
! while (read_intr_count(8) < 6)
; /* nothing */
if (read_intr_count(apic_8254_intr) < 3) {
/*
* The MP table is broken.
--- 999,1012 ----
if (apic_8254_trial) {
printf("APIC_IO: Testing 8254 interrupt delivery\n");
! while (read_intr_count(8) < 6) {
; /* nothing */
+ printf("---
read_intr_count(8):%lu\n",read_intr_count(8));
+ }
+ printf("___ Out of 'while(read_intr_count(8) < 6'\n");
+ printf("___ read_intr_count(8):%lu\n",read_intr_count(8));
+ printf("___ read_intr_count(apic_8254_intr):%lu\n",
+ read_intr_count(apic_8254_intr));
if (read_intr_count(apic_8254_intr) < 3) {
/*
* The MP table is broken.
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