Messages in this thread | | | Date | Thu, 23 Mar 2006 09:27:43 +1100 | From | Peter Williams <> | Subject | Re: Linux v2.6.16 |
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Ashok Raj wrote: > On Tue, Mar 21, 2006 at 09:22:41PM -0800, Peter Williams wrote: > >> I/O APICs >> Mar 22 16:10:31 heathwren kernel: More than 8 CPUs detected and >> CONFIG_X86_PC cannot handle it. >> >> ### No more CPUs seen but something in there thinks there's more than >> 8 >> of them. >> >> Mar 22 16:10:31 heathwren kernel: Use CONFIG_X86_GENERICARCH or >> CONFIG_X86_BIGSMP. >> > > > > This was disussed here, > > http://marc.theaimsgroup.com/?l=linux-kernel&m=114228068804099&w=2 > > but we didnt yet close out on it, Andrew didnt feel comfortable > making CONFIG_HOTPLUG_CPU depend on !X86_PC, and making it depend on CONFIG_GENERICARCH > or CONFIG_BIGSMP this late in the process. > > The warning is bogus,
That's what I thought but I thought I should still report it as bogus messages can cause people to become inured and ignore real ones.
> when BIGSMP was first introduced it was solely to handle >8 CPUS > using custer mode configuration. We switched bigsmp to use flat physical mode just like > what we do for x86_64, because some chipsets have ill effects with cpu hotplug. > when we wakeup a new cpu. Details here > > http://marc.theaimsgroup.com/?l=linux-kernel&m=113261865814107&w=2 > > Hence we switched to bigsmp, but the error message was not reworked, better yet is > to have the right config depends so we dont run into any race and instability issues. > >
Peter -- Peter Williams pwil3058@bigpond.net.au
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