Re: page fault panic in device_get_softc/acpi_pcib_route_interrupt

From: Pawel Worach (pawel.worach_at_telia.com)
Date: 01/07/05

  • Next message: Marcel Moolenaar: "Re: Oracle & linprocfs (was: Re: linux kernel-land)" 
    Date: Fri, 07 Jan 2005 00:26:57 +0100
To: Nate Lawson <nate@root.org>

    Nate Lawson wrote:
    > A possible fix is to change each reference to LP* in the PICM and APIC
    > packages to be \LPUS, \LP05, etc. Then recompile and load your asl via
    > the instructions for overriding it in acpi(4).
    >
    > I'm still not sure why this is broken though so I think it's a red
    > herring and suspect the asl fix won't help. I suspect the real reason
    > is that \LPUS is not probed/attached before calling pci_add_child() on
    > PCI0. Pawel, can you stick a printf in acpi_pci_link_attach() right
    > before the return (0) like this:
    >
    > printf("pci link attached: %s\n", acpi_name(acpi_get_handle(dev)));
    >
    > I suspect we won't see LPUS there before it panics.
    >

    I do not even see the code enter acpi_pci_link_attach(), even added a dummy
    printf at the top of the method.

    I modified the AML, changed all LP* to \LP* (except for the Device(LP*) ones,
    should I change these too?) the result was a couple of errors during boot.
    I broke something didn't I?

    can't fetch resources for \_SB_.PCI0 - AE_AML_INVALID_RESOURCE_TYPE
    can't fetch resources for \_SB_.PCI0.ISA_.SIOM - AE_AML_NO_RESOURCE_END_TAG
    can't fetch resources for \_SB_.PCI0.ISA_.PS2M - AE_AML_NO_RESOURCE_END_TAG
    can't fetch resources for \_SB_.PCI0.ISA_.FDC0 - AE_AML_NO_RESOURCE_END_TAG
    can't fetch resources for \_SB_.PCI0.ISA_.COM1 - AE_AML_NO_RESOURCE_END_TAG
    can't fetch resources for \_SB_.PCI1 - AE_AML_INVALID_RESOURCE_TYPE
    can't fetch resources for \_SB_.PCI2 - AE_AML_INVALID_RESOURCE_TYPE
    can't fetch resources for \_SB_.PCI3 - AE_AML_INVALID_RESOURCE_TYPE
    can't fetch resources for \_SB_.PCI4 - AE_AML_INVALID_RESOURCE_TYPE
    ..
    Fatal trap 12: page fault while in kernel mode
    [same old story]
    ... 

    -- 
Pawel
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  • Next message: Marcel Moolenaar: "Re: Oracle & linprocfs (was: Re: linux kernel-land)"

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