[Xen-devel] [PATCH 1/2] build: introduce CONFIG_NR_CPUS in Kconfig

[Doug Goldstein <cardoe@xxxxxxxxxx>]

Introduce an option where the user can modifiy the maximum number of
supported physical CPUs.

CC: Ian Campbell <ian.campbell@xxxxxxxxxx>
CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
---
This patch can probably be squashed together with the next one but I
broke it out with the hope that someone can check the wording on the
option and also double check the range.
---
 xen/arch/Kconfig     | 8 ++++++++
 xen/arch/arm/Kconfig | 2 ++
 xen/arch/x86/Kconfig | 2 ++
 3 files changed, 12 insertions(+)
 create mode 100644 xen/arch/Kconfig

diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig
new file mode 100644
index 0000000..791d577
--- /dev/null
+++ b/xen/arch/Kconfig
@@ -0,0 +1,8 @@
+
+config NR_CPUS
+       int "Maximum number of CPUs"
+       range 1 4095
+       default "256" if X86
+       default "128" if ARM
+       ---help---
+         Specifies the maximum number of CPUs which Xen will support.
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 2cab17b..60e923c 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -31,6 +31,8 @@ config ARCH_DEFCONFIG
 
 menu "Architecture Features"
 
+source "arch/Kconfig"
+
 # Select HAS_GICV3 if GICv3 is supported
 config HAS_GICV3
        bool
diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig
index 7d2ed96..e1c03bb 100644
--- a/xen/arch/x86/Kconfig
+++ b/xen/arch/x86/Kconfig
@@ -25,6 +25,8 @@ config ARCH_DEFCONFIG
 
 menu "Architecture Features"
 
+source "arch/Kconfig"
+
 endmenu
 
 source "common/Kconfig"
-- 
2.4.10


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