xen: add per-platform defaults for NR_CPUS

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@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Julien Grall <julien.grall@arm.com>
CC: JBeulich@suse.com
CC: andrew.cooper3@citrix.com
---

Changes in v6:
- remove useless additional default for ALL

diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig
index cf0acb7e89cf5fd932a7cabc0891432b6c5ac1e0..1954d1c5c133b1e9b76fc14cb438831e266026a3 100644 (file)
--- a/xen/arch/Kconfig
+++ b/xen/arch/Kconfig
@@ -3,6 +3,9 @@ config NR_CPUS
        int "Maximum number of physical CPUs"
        range 1 4095
        default "256" if X86
+       default "8" if ARM && RCAR3
+       default "4" if ARM && QEMU
+       default "4" if ARM && MPSOC
        default "128" if ARM
        ---help---
          Specifies the maximum number of physical CPUs which Xen will support.