[Linux-ia64] linux 2.5.17 --- acpi-related hang on boot?

[Linux-ia64] linux 2.5.17 --- acpi-related hang on boot?

[Peter Chubb]

Hi,
	With the small pfn_to_pte  patch I sent here last week, Linux
2.5.17 builds and boots on the HP simulator.  But on a real i2000 it
hangs during boot. 

I enabled verbose ACPI debug output by changing ACPI_DEBUG_LOW to
ACPI_DEBUG_HIGH in acpi_bus.c

The last printout on the screen is:

exregion-0321 [0001] [39] Ex_pci_config_space_ha PCI_config 0 (8)
Seg(0000) Bus(0000) Dev(0010) Func(0000) Reg(0040)

According to /proc/pci on a working kernel, bus 0 device 16 func 0 is
the host bridge:

Bus 0, device 16, function 0:
  Host bridge: Intel Corp, 460GX - 84460GX System Address Controlled
(SAC) (rev 3)

 How can I go on from here?  


Peter C

[Linux-ia64] linux 2.5.17 --- acpi-related hang on boot?

[Peter Chubb]

>>>>> "Peter" = Peter Chubb <peter@chubb.wattle.id.au> writes:

Peter> Hi, With the small pfn_to_pte patch I sent here last week,
Peter> Linux 2.5.17 builds and boots on the HP simulator.  But on a

Sorry that should be 2.5.15 ... (it's the 2.5.10 kernel patched with
the official patchset from kernel.org:ports/ia64, then patched up to 2.5.15)

Re: [Linux-ia64] linux 2.5.17 --- acpi-related hang on boot?

[David Mosberger]

>>>>> On Wed, 22 May 2002 11:43:36 +1000, Peter Chubb <peter@chubb.wattle.id.au> said:

  Peter> Hi, With the small pfn_to_pte patch I sent here last week,
  Peter> Linux 2.5.17 builds and boots on the HP simulator.  But on a
  Peter> real i2000 it hangs during boot.

The problem is due to this patch:

 http://linux.bkbits.net:8080/linux-2.5/diffs/drivers/acpi/acpi_osl.c@1.3?nav=index.html|src/|src/drivers|src/drivers/acpi|hist/drivers/acpi/acpi_osl.c

Changing #if 0 to #if 1 gives me a working kernel (2.5.17).

I haven't had time to look into a proper fix (need to finish the new
TLB flushing code first).

	--david