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    SubjectRe: [PATCH 1/2] boot: ignore early NMIs
    On Mon, Mar 12, 2012 at 03:14:20PM +0900, Fernando Luis Vázquez Cao wrote:

    [..]
    > The thing is that we want to avoid playing with hardware in the kdump
    > reboot patch when we can avoid it, the premise being that it cannot
    > be accessed without risking a lockup or worse (as the deadlock accessing
    > the I/O APIC showed).

    I think there needs to be a limit to being paranoid. On one hand people
    want to run panic notifiers, all the kmsg_dump() hooks in panic path, and
    on the other hand we are afraid of even disabling LAPIC.

    I personally think that disabling LAPIC is reasonably practical solution
    to the problem until and unless somebody shows that it deadlocks easily.

    Thanks
    Vivek
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