#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
+#include <linux/dmar.h>
+
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
+static int x2apic_phys;
+
+static int set_x2apic_phys_mode(char *arg)
+{
+ x2apic_phys = 1;
+ return 0;
+}
+early_param("x2apic_phys", set_x2apic_phys_mode);
+
+static int __init x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+ if (cpu_has_x2apic && intr_remapping_enabled && x2apic_phys)
+ return 1;
+
+ return 0;
+}
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
return x;
}
-static unsigned int x2apic_read_id(void)
-{
- return apic_read(APIC_ID);
-}
-
static unsigned int phys_pkg_id(int index_msb)
{
- return x2apic_read_id() >> index_msb;
+ return current_cpu_data.initial_apicid >> index_msb;
}
void x2apic_send_IPI_self(int vector)
struct genapic apic_x2apic_phys = {
.name = "physical x2apic",
+ .acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
.int_delivery_mode = dest_Fixed,
.int_dest_mode = (APIC_DEST_PHYSICAL != 0),
.target_cpus = x2apic_target_cpus,