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[PATCH] x86_64: Limit max number of CPUs to 255
authorAndi Kleen <ak@suse.de>
Sat, 25 Mar 2006 15:30:58 +0000 (16:30 +0100)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sat, 25 Mar 2006 17:10:56 +0000 (09:10 -0800)
Because 256 causes overflows in some code that stores them in 8 bit
fields and the x86 APIC architecture cannot handle more than 255
anyways.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/x86_64/Kconfig patch | blob | blame | history

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 24a3016c079ddc0f15806df3365e565b4a06fbfb..6fc631457196b871f815a2929b35200f402498b1 100644 (file)
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -323,7 +323,7 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
 
 config NR_CPUS
        int "Maximum number of CPUs (2-256)"
-       range 2 256
+       range 2 255
        depends on SMP
        default "8"
        help