[Xen-devel] [RFC PATCH v3 22/24] ARM: NUMA: Initialize ACPI NUMA

[vijay.kilari@xxxxxxxxx]

From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxx>

Call ACPI NUMA initialization under CONFIG_ACPI_NUMA.

Signed-off-by: Vijaya Kumar <Vijaya.Kumar@xxxxxxxxxx>
---
 xen/arch/arm/numa/acpi_numa.c | 27 ++++++++++++++++++++++++++-
 xen/arch/arm/numa/numa.c      | 15 +++++++++++++--
 xen/common/numa.c             | 14 ++++++++++++++
 xen/include/asm-arm/numa.h    |  1 +
 xen/include/xen/numa.h        |  1 +
 5 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/xen/arch/arm/numa/acpi_numa.c b/xen/arch/arm/numa/acpi_numa.c
index 95617f9..68fff95 100644
--- a/xen/arch/arm/numa/acpi_numa.c
+++ b/xen/arch/arm/numa/acpi_numa.c
@@ -181,7 +181,7 @@ acpi_numa_gicc_affinity_init(const struct 
acpi_srat_gicc_affinity *pa)
            pxm, mpidr, node);
 }
 
-void __init acpi_map_uid_to_mpidr(void)
+static void __init acpi_map_uid_to_mpidr(void)
 {
     acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
                     acpi_parse_madt_handler, NR_CPUS);
@@ -209,6 +209,31 @@ void __init arch_table_parse_srat(void)
                           acpi_parse_gicc_affinity, NR_CPUS);
 }
 
+bool_t __init arch_acpi_numa_init(void)
+{
+    int ret;
+
+    if ( !acpi_disabled )
+    {
+        /*
+         * If firmware has DT, process_memory_node() call
+         * would have added memory blocks. So reset it before
+         * ACPI numa init.
+         */
+        numa_clear_memblks();
+        nodes_clear(memory_nodes_parsed);
+        acpi_map_uid_to_mpidr();
+        ret = acpi_numa_init();
+        if ( ret || srat_disabled() )
+            return 1;
+
+        /* Register acpi node_distance handler */
+        register_node_distance(&acpi_node_distance);
+    }
+
+    return 0;
+}
+
 void __init acpi_numa_arch_fixup(void) {}
 
 /*
diff --git a/xen/arch/arm/numa/numa.c b/xen/arch/arm/numa/numa.c
index 26aa4c0..68599c4 100644
--- a/xen/arch/arm/numa/numa.c
+++ b/xen/arch/arm/numa/numa.c
@@ -139,11 +139,22 @@ void __init numa_init(void)
     if ( numa_off )
         goto no_numa;
 
-    ret = dt_numa_init();
+#ifdef CONFIG_ACPI_NUMA
+    ret = arch_acpi_numa_init();
     if ( ret )
     {
         numa_off = true;
-        printk(XENLOG_WARNING "DT NUMA init failed\n");
+        printk(XENLOG_WARNING "ACPI NUMA init failed\n");
+    }
+#endif
+    if ( acpi_disabled )
+    {
+        ret = dt_numa_init();
+        if ( ret )
+        {
+            numa_off = true;
+            printk(XENLOG_WARNING "DT NUMA init failed\n");
+        }
     }
 
 no_numa:
diff --git a/xen/common/numa.c b/xen/common/numa.c
index 0f79a07..020bc19 100644
--- a/xen/common/numa.c
+++ b/xen/common/numa.c
@@ -76,6 +76,20 @@ nodeid_t get_memblk_nodeid(unsigned int id)
     return memblk_nodeid[id];
 }
 
+void __init numa_clear_memblks(void)
+{
+    unsigned int i;
+
+    for ( i = 0; i < get_num_node_memblks(); i++ )
+    {
+        node_memblk_range[i].start = 0;
+        node_memblk_range[i].end = 0;
+        memblk_nodeid[i] = NUMA_NO_NODE;
+    }
+
+    num_node_memblks = 0;
+}
+
 int __init get_mem_nodeid(paddr_t start, paddr_t end)
 {
     unsigned int i;
diff --git a/xen/include/asm-arm/numa.h b/xen/include/asm-arm/numa.h
index f0a50bd..ff10b31 100644
--- a/xen/include/asm-arm/numa.h
+++ b/xen/include/asm-arm/numa.h
@@ -20,6 +20,7 @@ static inline nodeid_t acpi_get_nodeid(uint64_t hwid)
 void numa_init(void);
 int dt_numa_init(void);
 void numa_set_cpu_node(int cpu, unsigned int nid);
+bool_t arch_acpi_numa_init(void);
 
 #else
 static inline void numa_init(void)
diff --git a/xen/include/xen/numa.h b/xen/include/xen/numa.h
index a541eb7..14a7a0c 100644
--- a/xen/include/xen/numa.h
+++ b/xen/include/xen/numa.h
@@ -75,6 +75,7 @@ int get_num_node_memblks(void);
 bool arch_sanitize_nodes_memory(void);
 void numa_failed(void);
 uint8_t __node_distance(nodeid_t a, nodeid_t b);
+void numa_clear_memblks(void);
 #else
 static inline void numa_add_cpu(int cpu) { }
 static inline void numa_set_node(int cpu, nodeid_t node) { }
-- 
2.7.4


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