Date:	Thu, 05 Feb 2009 12:19:37 -0500
From:	Mark Hounschell <dmarkh@....rr.com>
To:	markh@...pro.net
CC:	Borislav Petkov <borislav.petkov@....com>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	john stultz <johnstul@...ibm.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: PROBLEM: Can't boot a (HZ = 1000) kernel using an AMD	Phenom-II
 processor

Mark Hounschell wrote:
> Borislav Petkov wrote:
>> Hi,
>>
>> On Tue, Feb 03, 2009 at 04:17:55AM -0500, Mark Hounschell wrote:
>>> Borislav Petkov wrote:
>>>> On Sat, Jan 31, 2009 at 04:15:58AM -0500, Mark Hounschell wrote:
>>>>
>>>> [..]
>>>>
>>>>> So were you able to reproduce this with my .config. Has anyone booted a Hz=1000
>>>>> kernel on an AMD Phenom-II? Is there something wrong with my .config? Is there
>>>>> anything else I can do?
>>>> Hi,
>>>>
>>>> sorry for the delay - I've been busy last week and couldn't get to your
>>>> problem. So, I couldn't reproduce the bug here with a Phenom II and your
>>>> kernel config. However, we have a working theory, so can you please send
>>>> me the output of
>>>>
>>>> xxd /sys/firmware/acpi/tables/APIC
>>>>
>>> markh@...ley:~> xxd /sys/firmware/acpi/tables/APIC
>>> 0000000: 4150 4943 8400 0000 014c 5258 3738 3020  APIC.....LRX780
>>> 0000010: 4157 5244 4143 5049 312e 3042 4157 5244  AWRDACPI1.0BAWRD
>>> 0000020: 0000 0000 0000 e0fe 0100 0000 0008 0000  ................
>>> 0000030: 0100 0000 0008 0101 0100 0000 0008 0202  ................
>>> 0000040: 0100 0000 0008 0303 0100 0000 010c 0400  ................
>>> 0000050: 0000 c0fe 0000 0000 020a 0000 0200 0000  ................
>>> 0000060: 0000 020a 0009 0900 0000 0f00 0406 0005  ................
>>> 0000070: 0001 0406 0105 0001 0406 0205 0001 0406  ................
>>> 0000080: 0305 0001
>> looks good at a glance...
>>
>>>> Also, can you boot a 64-bit, HZ1000 kernel on your machine?
>>>>
>>> No, a 64 bit kernel @1000Hz doesn't boot either. As with the 32 bit kernel,
>>> setting Hz to 250 allows it to boot. The messages are slightly different when it
>>> hangs on the 64bit kernel at 1000Hz.
>> That's not cool - as I said before, I can't reproduce this behavior here
>> which means that the problem might be chipset-related. What you could do
>> now is to boot the kernel with "debug initcall_debug log_buf_len=10M"
>> and try to capture the whole boot log with a serial console - or if that
>> doesn't work - make a screenshot with a camera of some sort. This might
>> shed some light on the question where exactly your machine hangs.
>>
>
>Another question: does your machine boot a tickless kernel (CONFIG_NO_HZ >enabled)?


Borislav,

A tickless kernel didn't change anything. I did get a serial console connected
and below is what I got. I don't see much usefull. Attached is the config.


Press any key to continue.
root (hd0,0)
 Filesystem type is ext2fs, partition type 0x83
kernel /vmlinuz-2.6.26.8-1000Hz  root=/dev/sda5 hwprobe=-modules.pata apm=off s
elinux=0 noresume splash=silent debug initcall_debug log_buf_len=10M console=tt
yS0,19200n8 vga=normal
   [Linux-bzImage, setup=0x2e00, size=0x1827c0]
initrd /initrd-2.6.26.8-1000Hz
   [Linux-initrd @ 0x37622000, 0x9cdf42 bytes]

Initializing cgroup subsys cpuset
Linux version 2.6.26.8-1000Hz (root@...ley) (gcc version 4.3.1 20080507
(prerelease) [gcc-4_3-branch revision 135036] (SUSE Linux) ) #5 SMP PREEMPT Wed Feb9
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
 BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 00000000bffe0000 (usable)
 BIOS-e820: 00000000bffe0000 - 00000000bffe3000 (ACPI NVS)
 BIOS-e820: 00000000bffe3000 - 00000000bfff0000 (ACPI data)
 BIOS-e820: 00000000bfff0000 - 00000000c0000000 (reserved)
 BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
 BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000140000000 (usable)
x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
Warning only 4GB will be used.
Use a HIGHMEM64G enabled kernel.
3200MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at [c00f3f00] 000f3f00
Entering add_active_range(0, 0, 1048576) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->   229376
  HighMem    229376 ->  1048576
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->  1048576
On node 0 totalpages: 1048576
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 1760 pages used for memmap
  Normal zone: 223520 pages, LIFO batch:31
  HighMem zone: 6400 pages used for memmap
  HighMem zone: 812800 pages, LIFO batch:31
  Movable zone: 0 pages used for memmap
DMI 2.5 present.
ACPI: RSDP 000F7FB0, 0024 (r2 RX780 )
ACPI: XSDT BFFE3080, 0044 (r1 RX780  AWRDACPI 42302E31 AWRD        0)
ACPI: FACP BFFE8C80, 00F4 (r3 RX780  AWRDACPI 42302E31 AWRD        0)
ACPI: DSDT BFFE3200, 5A71 (r1 RX780  AWRDACPI     1000 MSFT  100000E)
ACPI: FACS BFFE0000, 0040
ACPI: HPET BFFE8E40, 0038 (r1 RX780  AWRDACPI 42302E31 AWRD       98)
ACPI: MCFG BFFE8E80, 003C (r1 RX780  AWRDACPI 42302E31 AWRD        0)
ACPI: APIC BFFE8D80, 0084 (r1 RX780  AWRDACPI 42302E31 AWRD        0)
ATI board detected. Disabling timer routing over 8254.
ACPI: PM-Timer IO Port: 0x4008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] enabled)
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 4, version 33, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
ACPI: HPET id: 0x10b9a201 base: 0xfed00000
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at c2000000 (gap: c0000000:20000000)
SMP: Allowing 4 CPUs, 0 hotplug CPUs
PERCPU: Allocating 38788 bytes of per cpu data
NR_CPUS: 32, nr_cpu_ids: 4
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 1040384
Kernel command line: root=/dev/sda5 hwprobe=-modules.pata apm=off selinux=0
noresume splash=silent debug initcall_debug log_buf_len=10M console=ttyS0,19200l
log_buf_len: 16777216
mapped APIC to ffffb000 (fee00000)
mapped IOAPIC to ffffa000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
Preemptible RCU implementation.
PID hash table entries: 4096 (order: 12, 16384 bytes)
Detected 3360.327 MHz processor.
Console: colour VGA+ 80x25
console [ttyS0] enabled
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 3080904k/4194304k available (1751k kernel code, 63472k reserved, 730k
data, 216k init, 2228096k highmem)
virtual kernel memory layout:
    fixmap  : 0xffe15000 - 0xfffff000   (1960 kB)
    pkmap   : 0xff800000 - 0xffc00000   (4096 kB)
    vmalloc : 0xf8800000 - 0xff7fe000   ( 111 MB)
    lowmem  : 0xc0000000 - 0xf8000000   ( 896 MB)
      .init : 0xc0373000 - 0xc03a9000   ( 216 kB)
      .data : 0xc02b5ca2 - 0xc036c6d0   ( 730 kB)
      .text : 0xc0100000 - 0xc02b5ca2   (1751 kB)
Checking if this processor honours the WP bit even in supervisor mode...Ok.
CPA: page pool initialized 1 of 1 pages preallocated
SLUB: Genslabs=12, HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1


Thanks
Mark


View attachment "config_1000Hz_tickless" of type "text/plain" (88742 bytes)

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