The patch allows one to configure NR_CPUS >8 (16 by default, same as the

native) for x86_64 xenlinux. I tested 16-way xenolinux (using changeset
7892) on a 16-way SMP machine with >8GB memory. It worked fine as long
as I did sanity tests like kernel build (make -j64).

Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>

diff --git a/linux-2.6-xen-sparse/arch/xen/x86_64/Kconfig b/linux-2.6-xen-sparse/arch/xen/x86_64/Kconfig
index 1e2e62eb0155914d3175b18cf75f5aa08147b603..efed94b44595c2e977f82b4240cc1e1facfcc5d7 100644 (file)
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/Kconfig
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/Kconfig
@@ -288,10 +288,10 @@ config HAVE_DEC_LOCK
 # actually 64 maximum, but you need to fix the APIC code first
 # to use clustered mode or whatever your big iron needs
 config NR_CPUS
-       int "Maximum number of CPUs (2-8)"
-       range 2 8
+       int "Maximum number of CPUs (2-255)"
+       range 2 255
        depends on SMP
-       default "8"
+       default "16"
        help
          This allows you to specify the maximum number of CPUs which this
          kernel will support.  The maximum supported value is 32 and the