[Xen-devel] [PATCH 5/6] x86/smp: Allocate pcpu stacks on their local numa node

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Previously, all pcpu stacks tended to be allocated on node 0.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
CC: Jan Beulich <JBeulich@xxxxxxxx>

---
I have not done any performance, but this is obviously an improvement.
---
 xen/arch/x86/smpboot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index a009e91..116c8f8 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -642,7 +642,7 @@ static int cpu_smpboot_alloc(unsigned int cpu)
     if ( node != NUMA_NO_NODE )
         memflags = MEMF_node(node);
 
-    stack_base[cpu] = alloc_xenheap_pages(STACK_ORDER, 0);
+    stack_base[cpu] = alloc_xenheap_pages(STACK_ORDER, memflags);
     if ( stack_base[cpu] == NULL )
         goto oom;
     memguard_guard_stack(stack_base[cpu]);
-- 
1.7.10.4


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