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Re: [Xen-devel] [PATCH v5 09/10] xen: add per-platform defaults for NR_CPUS

Hi Stefano,

On 04/06/18 18:24, Stefano Stabellini wrote:
Add specific per-platform defaults for NR_CPUS. Note that the order of
the defaults matter: they need to go first, otherwise the generic
defaults will be applied.

This is done so that Xen builds customized for a specific hardware
platform can have the right NR_CPUS number.

Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: JBeulich@xxxxxxxx
CC: andrew.cooper3@xxxxxxxxxx
  xen/arch/Kconfig | 4 ++++
  1 file changed, 4 insertions(+)

diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig
index cf0acb7..ed8f3d8 100644
--- a/xen/arch/Kconfig
+++ b/xen/arch/Kconfig
@@ -3,6 +3,10 @@ config NR_CPUS
        int "Maximum number of physical CPUs"
        range 1 4095
        default "256" if X86
+       default "128" if ARM && ALL

I would drop this has this is cover by "if ARM" below.

+       default "8" if ARM && RCAR3
+       default "4" if ARM && QEMU
+       default "4" if ARM && MPSOC
        default "128" if ARM
          Specifies the maximum number of physical CPUs which Xen will support.


Julien Grall

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