Messages in this thread | | | From | Jeff Moyer <> | Date | Mon, 2 Aug 2004 12:58:06 -0400 | Subject | Re: finding out the boot cpu number from userspace |
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==> Regarding Re: finding out the boot cpu number from userspace; "Martin J. Bligh" <mbligh@aracnet.com> adds:
>> assuming cpu 0 is the boot cpu sounds fragile/incorrect, but for >> irqbalanced I'd like to find out which cpu is the boot cpu, is there a >> good way of doing so ? >> >> The reason for needing this is that some firmware only likes running on >> the boot cpu so I need to bind firmware-related irq's to that cpu >> ideally.
mbligh> On any sane arch, cpu 0 *IS* always the boot CPU, as we dynamically mbligh> number CPUs that way ... that doesn't mean that it's apicid 0. I mbligh> believe that PPC64 screwed this up, but AFAIK, everyone else gets mbligh> it correct ... ;-)
Hmm, do we need to do any special handling for this in the kexec case? ISTR having some issues with this when using bootimg years back.
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