Bad IRQs & SATA ADMA failures

["Alan D. Brunelle" <Alan.Brunelle@hp.com>]

I'm new to the KEXEC/KDUMP world - just started out today. I believe
that I have things set up right, but I'm running into two issues:

1. A few seconds into the boot, I see:

[    3.400435] ata1: SATA max UDMA/133 cmd 0x28d0 ctl 0x28f8 bmdma
0x28b0 irq 5
[    3.410435] ata2: SATA max UDMA/133 cmd 0x28d8 ctl 0x28fc bmdma
0x28b8 irq 5
[    3.864522] irq 5: nobody cared (try booting with the "irqpoll" option)
[    3.864522] Pid: 0, comm: swapper Not tainted 2.6.25-rc8-bannor-kexec #1
[    3.864522
[    3.864522] Call Trace:
[    3.864522]  <IRQ> [<ffffffff8024da5e>] __report_bad_irq+0x1e/0x80
[    3.864522] [<ffffffff8024dd2f>] note_interrupt+0x26f/0x2a0
[    3.864522] [<ffffffff8024e2b1>] handle_fasteoi_irq+0x71/0xa0
[    3.864522] [<ffffffff8020ed8c>] do_IRQ+0x5c/0xc0
[    3.864522] [<ffffffff8020c471>] ret_from_intr+0x0/0xa
[    3.864522]  <EOI> [<ffffffff803bc610>] nv_scr_read+0x0/0x30
[    3.864522] [<ffffffff8020afbe>] default_idle+0x2e/0x60
[    3.864522] [<ffffffff8020afb9>] default_idle+0x29/0x60
[    3.864522] [<ffffffff8020af90>] default_idle+0x0/0x60
[    3.864522] [<ffffffff8020b032>] cpu_idle+0x42/0x70
[    3.864522] [<ffffffff80501aaa>] start_kernel+0x23a/0x280
[    3.864522] [<ffffffff805011a5>] _sinittext+0x1a5/0x1f0
[    3.864522]
[    3.864522] handlers:
[    3.864522] [<ffffffff803bd950>] (nv_adma_interrupt+0x0/0x4c0)
[    3.864522] Disabling IRQ #5


2. Very soon thereafter, I start seeing:

[    4.671112]  sda:<3>ata1: EH in ADMA mode, notifier 0x1
notifier_error 0x0 g0
[   34.681112] ata1: CPB 0: ctl_flags 0xd, resp_flags 0x1
[   34.681112] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
frozen
[   34.691112] ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0
dma 4096 n
[   34.691112]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask
0x4 (time)
[   34.701112] ata1.00: status: { DRDY }
[   35.051112] ata1: soft resetting link
[   35.211112] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[   35.251112] ata1.00: configured for UDMA/100
[   35.251112] ata1: EH complete

This goes on "forever" - and the system fails to boot.

This script is used to set up kexec:

root="root=/dev/sda1"
gen_args="1 irqpoll maxcpus=1 reset_devices"
bannor_args="acpi=off console=tty0 console=ttyS2,115200n8"

/usr/local/sbin/kexec -l /boot/vmlinuz-2.6.25-rc8-bannor-kexec \
                      --append="${root} ${gen_args} ${bannor_args}"

Some other notes:

o  I have the kernel gen'd w/out an initrd

o  Kernel is gen'd w/out CONFIG_SMP

o  I added the 'acpi=off' as one site I google'd had that as a possible
fix for a problem like this.

I do not know if the two problems mentioned above are related, but in
any case, I'm wondering if there are any pointers out there to help get
this going.

I have the output from 'lspci' and the console log during a failed boot
up on : http://free.linux.hp.com/~adb/kexec/bootlog.txt

Thanks,
Alan

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