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    SubjectRe: [PATCH] [9/50] i386: validate against ACPI motherboard resources
    On 9/22/07, Robert Hancock <hancockr@shaw.ca> wrote:
    > Yinghai Lu wrote:
    > > No!
    > >
    > > MMCONFIG will not work with acpi=off any more.
    >
    > I don't think this is unreasonable. The ACPI MCFG table is how we are
    > supposed to learn about the area in the first place. If we can't get the
    > table location via an approved mechanism, and can't validate it doesn't
    > overlap with another memory reservation or something, I really don't
    > think we should be using it.
    >
    > I don't think it's much of an issue anyway - the chances that somebody
    > will want to run without ACPI on a system with MCFG are pretty low given
    > that you'll end up losing a bunch of functionality (not least of which
    > is multi-cores).

    with acpi=off, that we do lose some features including acpi hotplug
    and power management feature...
    but we don't lose anything about numa ( multi-cores...) and
    bus-numa... (we get these info from NB pci conf for AMD rev C, rev E,
    rev F, and Fam 10 opteron)...

    Finally we lose bugs introduced by ACPI code ...

    YH
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