Hi,

On 12/04/18 01:07, Stefano Stabellini wrote:
On Wed, 11 Apr 2018, Mirela Simonovic wrote:
diff --git a/xen/arch/arm/smpboot.c b/xen/arch/arm/smpboot.c
index 5666efcd3a..d15ea8df5e 100644
--- a/xen/arch/arm/smpboot.c
+++ b/xen/arch/arm/smpboot.c
@@ -52,8 +52,8 @@ nodemask_t __read_mostly node_online_map = { { [0] = 1UL } };
  static unsigned char __initdata cpu0_boot_stack[STACK_SIZE]
         __attribute__((__aligned__(STACK_SIZE)));
-/* Initial boot cpu data */
-struct init_info __initdata init_data =
+/* Boot cpu data */
+struct init_info init_data =
  {
      .stack = cpu0_boot_stack,
  };


Don't you also want to remove __initdata from cpu0_boot_stack?

I am not sure about this. When you go idle, you could re-use the idle_vcpu[0]->arch.stack. So you save 12K in resident memory.

Cheers,

--
Julien Grall

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