Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / x86 / kernel / apic / probe_64.c

diff --git a/kernel/arch/x86/kernel/apic/probe_64.c b/kernel/arch/x86/kernel/apic/probe_64.c
new file mode 100644 (file)
index 0000000..1793dba
--- /dev/null
+++ b/kernel/arch/x86/kernel/apic/probe_64.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2004 James Cleverdon, IBM.
+ * Subject to the GNU Public License, v.2
+ *
+ * Generic APIC sub-arch probe layer.
+ *
+ * Hacked for x86-64 by James Cleverdon from i386 architecture code by
+ * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
+ * James Cleverdon.
+ */
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/hardirq.h>
+#include <linux/dmar.h>
+
+#include <asm/smp.h>
+#include <asm/apic.h>
+#include <asm/ipi.h>
+#include <asm/setup.h>
+
+/*
+ * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
+ */
+void __init default_setup_apic_routing(void)
+{
+       struct apic **drv;
+
+       enable_IR_x2apic();
+
+       for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
+               if ((*drv)->probe && (*drv)->probe()) {
+                       if (apic != *drv) {
+                               apic = *drv;
+                               pr_info("Switched APIC routing to %s.\n",
+                                       apic->name);
+                       }
+                       break;
+               }
+       }
+
+       if (x86_platform.apic_post_init)
+               x86_platform.apic_post_init();
+}
+
+/* Same for both flat and physical. */
+
+void apic_send_IPI_self(int vector)
+{
+       __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
+}
+
+int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+       struct apic **drv;
+
+       for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
+               if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
+                       if (apic != *drv) {
+                               apic = *drv;
+                               pr_info("Setting APIC routing to %s.\n",
+                                       apic->name);
+                       }
+                       return 1;
+               }
+       }
+       return 0;
+}