Messages in this thread | | | Date | Mon, 12 Mar 2012 09:36:19 -0400 | From | Vivek Goyal <> | Subject | Re: [PATCH 1/2] boot: ignore early NMIs |
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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.
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