On Mon, Mar 12, 2012 at 03:14:20PM +0900, Fernando Luis V?zquez 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
