Messages in this thread |  | | From | Keith Owens <> | Subject | Re: Configure.help entries wanted | Date | Fri, 25 May 2001 16:59:24 +1000 |
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On Fri, 25 May 2001 02:35:58 -0400, "Eric S. Raymond" <esr@thyrsus.com> wrote: >Keith Owens <kaos@ocs.com.au>: >> +McKinley A-step specific code >> +CONFIG_MCKINLEY_ASTEP_SPECIFIC >> + Select this option to build a kernel for an IA64 McKinley system >> + with any A-stepping CPU. >> + >> +McKinley A0/A1-step specific code >> +CONFIG_MCKINLEY_A0_SPECIFIC >> + Select this option to build a kernel for an IA64 McKinley system >> + with an A0 or A1 stepping CPU. > >Is there a value range in /proc/cpuinfo that tells you you have an A/A0 step?
Unfortunately I do not have the McKinley data yet, the NDA is worse than the Itanium one. Fill in later when the data is available, I expect more McKinley steppings to be added to the list.
>> +CONFIG_IA64_DEBUG_CMPXCHG >> + Selecting this option turns on bug checking for the IA64 >> + compare-and-exchange instructions. This is slow! If you're unsure, >> + select N. > >These would be much improved by some indication of what IA64 variants or mask >steppings have these problems.
Early ones for compare-and-exchange. AFAIK no recent (Itanium B3 or later) cpu has these problems.
>> +IA64 IRQ bug checking >> +CONFIG_IA64_DEBUG_IRQ >> + Selecting this option turns on bug checking for the IA64 irq_save and >> + restore instructions. This is slow! If you're unsure, select N.
This is software, not hardware, debugging. It saves addresses to help track down spinlock problems.
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