lkml.org 
[lkml]   [2004]   [Aug]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: finding out the boot cpu number from userspace
==> 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.

-Jeff
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:04    [from the cache]
©2003-2011 Jasper Spaans