Merge branch 'x86/numa' into x86/devel

[platform/kernel/linux-arm64.git] / arch / x86 / kernel / head64.c

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 5fbed45..c970929 100644 (file)
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -25,6 +25,20 @@
 #include <asm/e820.h>
 #include <asm/bios_ebda.h>
 
+/* boot cpu pda */
+static struct x8664_pda _boot_cpu_pda __read_mostly;
+
+#ifdef CONFIG_SMP
+/*
+ * We install an empty cpu_pda pointer table to indicate to early users
+ * (numa_set_node) that the cpu_pda pointer table for cpus other than
+ * the boot cpu is not yet setup.
+ */
+static struct x8664_pda *__cpu_pda[NR_CPUS] __initdata;
+#else
+static struct x8664_pda *__cpu_pda[NR_CPUS] __read_mostly;
+#endif
+
 static void __init zap_identity_mappings(void)
 {
        pgd_t *pgd = pgd_offset_k(0UL);
@@ -88,10 +102,12 @@ void __init x86_64_start_kernel(char * real_mode_data)
 
        early_printk("Kernel alive\n");
 
-       for (i = 0; i < NR_CPUS; i++)
-               cpu_pda(i) = &boot_cpu_pda[i];
-
+       _cpu_pda = __cpu_pda;
+       cpu_pda(0) = &_boot_cpu_pda;
        pda_init(0);
+
+       early_printk("Kernel really alive\n");
+
        copy_bootdata(__va(real_mode_data));
 
        reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");