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Diffstat (limited to 'arch/x86/kernel/setup64.c')
-rw-r--r--arch/x86/kernel/setup64.c97
1 files changed, 20 insertions, 77 deletions
diff --git a/arch/x86/kernel/setup64.c b/arch/x86/kernel/setup64.c
index e24c456..9042fb0 100644
--- a/arch/x86/kernel/setup64.c
+++ b/arch/x86/kernel/setup64.c
@@ -11,6 +11,7 @@
#include <linux/bootmem.h>
#include <linux/bitops.h>
#include <linux/module.h>
+#include <linux/kgdb.h>
#include <asm/pda.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -23,6 +24,7 @@
#include <asm/proto.h>
#include <asm/sections.h>
#include <asm/setup.h>
+#include <asm/genapic.h>
#ifndef CONFIG_DEBUG_BOOT_PARAMS
struct boot_params __initdata boot_params;
@@ -85,83 +87,6 @@ static int __init nonx32_setup(char *str)
}
__setup("noexec32=", nonx32_setup);
-/*
- * Copy data used in early init routines from the initial arrays to the
- * per cpu data areas. These arrays then become expendable and the
- * *_early_ptr's are zeroed indicating that the static arrays are gone.
- */
-static void __init setup_per_cpu_maps(void)
-{
- int cpu;
-
- for_each_possible_cpu(cpu) {
-#ifdef CONFIG_SMP
- if (per_cpu_offset(cpu)) {
-#endif
- per_cpu(x86_cpu_to_apicid, cpu) =
- x86_cpu_to_apicid_init[cpu];
- per_cpu(x86_bios_cpu_apicid, cpu) =
- x86_bios_cpu_apicid_init[cpu];
-#ifdef CONFIG_NUMA
- per_cpu(x86_cpu_to_node_map, cpu) =
- x86_cpu_to_node_map_init[cpu];
-#endif
-#ifdef CONFIG_SMP
- }
- else
- printk(KERN_NOTICE "per_cpu_offset zero for cpu %d\n",
- cpu);
-#endif
- }
-
- /* indicate the early static arrays will soon be gone */
- x86_cpu_to_apicid_early_ptr = NULL;
- x86_bios_cpu_apicid_early_ptr = NULL;
-#ifdef CONFIG_NUMA
- x86_cpu_to_node_map_early_ptr = NULL;
-#endif
-}
-
-/*
- * Great future plan:
- * Declare PDA itself and support (irqstack,tss,pgd) as per cpu data.
- * Always point %gs to its beginning
- */
-void __init setup_per_cpu_areas(void)
-{
- int i;
- unsigned long size;
-
-#ifdef CONFIG_HOTPLUG_CPU
- prefill_possible_map();
-#endif
-
- /* Copy section for each CPU (we discard the original) */
- size = PERCPU_ENOUGH_ROOM;
-
- printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n", size);
- for_each_cpu_mask (i, cpu_possible_map) {
- char *ptr;
-#ifndef CONFIG_NEED_MULTIPLE_NODES
- ptr = alloc_bootmem_pages(size);
-#else
- int node = early_cpu_to_node(i);
-
- if (!node_online(node) || !NODE_DATA(node))
- ptr = alloc_bootmem_pages(size);
- else
- ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
-#endif
- if (!ptr)
- panic("Cannot allocate cpu data for CPU %d\n", i);
- cpu_pda(i)->data_offset = ptr - __per_cpu_start;
- memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
- }
-
- /* setup percpu data maps early */
- setup_per_cpu_maps();
-}
-
void pda_init(int cpu)
{
struct x8664_pda *pda = cpu_pda(cpu);
@@ -327,6 +252,17 @@ void __cpuinit cpu_init (void)
load_TR_desc();
load_LDT(&init_mm.context);
+#ifdef CONFIG_KGDB
+ /*
+ * If the kgdb is connected no debug regs should be altered. This
+ * is only applicable when KGDB and a KGDB I/O module are built
+ * into the kernel and you are using early debugging with
+ * kgdbwait. KGDB will control the kernel HW breakpoint registers.
+ */
+ if (kgdb_connected && arch_kgdb_ops.correct_hw_break)
+ arch_kgdb_ops.correct_hw_break();
+ else {
+#endif
/*
* Clear all 6 debug registers:
*/
@@ -337,8 +273,15 @@ void __cpuinit cpu_init (void)
set_debugreg(0UL, 3);
set_debugreg(0UL, 6);
set_debugreg(0UL, 7);
+#ifdef CONFIG_KGDB
+ /* If the kgdb is connected no debug regs should be altered. */
+ }
+#endif
fpu_init();
raw_local_save_flags(kernel_eflags);
+
+ if (is_uv_system())
+ uv_cpu_init();
}
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