Re: [PATCH] compile-time configurable NR_CPUS

William Lee Irwin III (wli@holomorphy.com)
Thu, 29 Aug 2002 14:42:30 -0700


On Thu, Aug 29, 2002 at 11:33:20AM -0400, Robert Love wrote:
> diff -urN linux-2.5.32/arch/i386/config.in linux/arch/i386/config.in
--- linux-2.5.32/arch/i386/config.in Tue Aug 27 15:26:39 2002
+++ linux/arch/i386/config.in Wed Aug 28 19:15:32 2002
@@ -166,6 +166,7 @@
define_bool CONFIG_X86_IO_APIC y
fi
else
+ int 'Maximum number of CPUs (2-32)' CONFIG_NR_CPUS 32
bool 'Multiquad NUMA system' CONFIG_MULTIQUAD
fi

Could you make CONFIG_NR_CPUS only for non-NUMA-Q systems and hardwire
it to 32 for NUMA-Q, as the bugs in io_apic.c don't have fixes yet and
NUMA-Q's have enough IO-APIC's to trigger the bugs.

Thanks,
Bill
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