Revert 20726:ddb8c5e798f9

Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>

xen/arch/x86/numa.c

@@ -35,9 +35,6 @@ u8  memnodemap[NODEMAPSIZE];
 unsigned char cpu_to_node[NR_CPUS] __read_mostly = {
 	[0 ... NR_CPUS-1] = NUMA_NO_NODE
 };
-/*
- * Keep BIOS's CPU2node information, should not be used for memory allocaion
- */
 unsigned char apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
  	[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
 };
@@ -291,15 +288,14 @@ static __init int numa_setup(char *opt)
  */
 void __devinit init_cpu_to_node(void)
 {
-	int i, node;
+	int i;
  	for (i = 0; i < NR_CPUS; i++) {
 		u32 apicid = x86_cpu_to_apicid[i];
 		if (apicid == BAD_APICID)
 			continue;
-		node = apicid_to_node[apicid];
-		if ( node == NUMA_NO_NODE || !node_online(node) )
-			node = 0;
-		numa_set_node(i, node);
+		if (apicid_to_node[apicid] == NUMA_NO_NODE)
+			continue;
+		numa_set_node(i,apicid_to_node[apicid]);
 	}
 }
 

xen/arch/x86/setup.c

@@ -20,7 +20,6 @@
 #include <xen/rcupdate.h>
 #include <xen/vga.h>
 #include <xen/dmi.h>
-#include <xen/nodemask.h>
 #include <public/version.h>
 #ifdef CONFIG_COMPAT
 #include <compat/platform.h>
@@ -264,7 +263,7 @@ void __devinit srat_detect_node(int cpu)
     u32 apicid = x86_cpu_to_apicid[cpu];
 
     node = apicid_to_node[apicid];
-    if ( node == NUMA_NO_NODE || !node_online(node) )
+    if ( node == NUMA_NO_NODE )
         node = 0;
     numa_set_node(cpu, node);
 

xen/arch/x86/smpboot.c

@@ -913,7 +913,7 @@ static int __devinit do_boot_cpu(int apicid, int cpu)
 	}
 #else
 	if (!per_cpu(compat_arg_xlat, cpu))
-		setup_compat_arg_xlat(cpu, cpu_to_node[cpu]);
+		setup_compat_arg_xlat(cpu, apicid_to_node[apicid]);
 #endif
 
 	if (!idt_tables[cpu]) {

xen/arch/x86/x86_64/mm.c

@@ -997,7 +997,7 @@ void __init subarch_init_memory(void)
     }
 
     if ( setup_compat_arg_xlat(smp_processor_id(),
-                               cpu_to_node[0]) )
+                               apicid_to_node[boot_cpu_physical_apicid]) )
         panic("Could not setup argument translation area");
 }