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[RFC,v2,17/25] ARM: NUMA: Add fallback on NUMA failure

Message ID 1490716413-19796-18-git-send-email-vijay.kilari@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Vijay Kilari March 28, 2017, 3:53 p.m. UTC 
From: Vijaya Kumar K <Vijaya.Kumar@cavium.com>

On NUMA initialization failure, reset all the
NUMA structures to emulate as single node.

Signed-off-by: Vijaya Kumar <Vijaya.Kumar@cavium.com>
---
 xen/arch/arm/numa/numa.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/xen/arch/arm/numa/numa.c b/xen/arch/arm/numa/numa.c
index 7583a40..891d304 100644
--- a/xen/arch/arm/numa/numa.c
+++ b/xen/arch/arm/numa/numa.c
@@ -22,6 +22,7 @@ 
 #include <xen/numa.h>
 #include <asm/acpi.h>
 #include <xen/errno.h>
+#include <xen/pfn.h>
 
 static uint8_t (*node_distance_fn)(nodeid_t a, nodeid_t b);
 
@@ -164,7 +165,12 @@  void __init numa_init(void)
     if ( !ret )
         ret = numa_initmem_init(ram_start, ram_end);
 
+    if ( !ret )
+        return;
+
 no_numa:
+    numa_dummy_init(PFN_UP(ram_start),PFN_DOWN(ram_end));
+
     return;
 }