More info on VP6 panics
From: Ian Pilcher (i.pilcher_at_comcast.net)
Date: 01/17/04
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Date: Sat, 17 Jan 2004 00:50:53 -0600 To: acpi-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Background: I get a kernel panic when I boot 2.4.2{2,3,4} with ACPI on
my dual-processor Abit VP6. Compiling the kernel with CONFIG_DEBUG_SLAB
turned on allows it to boot, as does booting with "idle=poll".
I do not believe that the panic occurs anywhere in the ACPI code. From
what I can tell, the transition to ACPI mode causes the idle thread on
the other processor to panic.
I believe that I have identified the line of code that triggers the
panic. It is the actual transition to ACPI mode at
drivers/acpi/hardware/hwacpi.c, line 143. If I insert an infinite loop
before the call to acpi_os_write_port, the boot process simply hangs.
If I move the loop below the call to acpi_os_write_port, I get the same
old panic message.
How can I debug this further?
Thanks!
-- ======================================================================== Ian Pilcher i.pilcher@comcast.net ======================================================================== - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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