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-rw-r--r--arch/x86/Kconfig6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f67e839f06c8..f03e428112eb 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -825,14 +825,16 @@ config MAXSMP
config NR_CPUS
int "Maximum number of CPUs" if SMP && !MAXSMP
range 2 8 if SMP && X86_32 && !X86_BIGSMP
- range 2 512 if SMP && !MAXSMP
+ range 2 512 if SMP && !MAXSMP && !CPUMASK_OFFSTACK
+ range 2 4096 if SMP && !MAXSMP && CPUMASK_OFFSTACK && X86_64
default "1" if !SMP
default "4096" if MAXSMP
default "32" if SMP && (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000)
default "8" if SMP
---help---
This allows you to specify the maximum number of CPUs which this
- kernel will support. The maximum supported value is 512 and the
+ kernel will support. If CPUMASK_OFFSTACK is enabled, the maximum
+ supported value is 4096, otherwise the maximum value is 512. The
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds