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    SubjectRe: Calling PnP bios routines like get device node from x86_84 arch
    On Mon, 10 Sep 2007 08:06:20 -0700 (PDT)
    PnP driver <mkrameshid@gmail.com> wrote:

    >
    > Hi,
    > I am very new to linux kernel driver development. I need to develop a
    > driver for calling BIOS routines like get device node. I could call it
    > in i386 architecture using the PnP driver.

    We use ACPI on AMD64 so you should be parsing the ACPI tables not trying
    to rely on legacy interfaces which if I rememeber the spec rightly aren't
    even guaranteed safe to call when ACPI is active.

    What are you actually trying to achieve.

    > But in x86_64 arch I couldn't see any support. Even I tried to
    > implement it similar to the i386. But there is no API get_cpu_gdt_table().
    > Is there any other way to get the cpu_gdt_table? or any other way to
    > call the BIOS routines.

    Assuming you even have a BIOS - you may have EFI underlying or
    Linuxbios or be a virtual machine.
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