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-rw-r--r--drivers/acpi/processor_core.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index dd28c912e84f..5241e3ff5080 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -603,6 +603,15 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
request_region(pr->throttling.address, 6, "ACPI CPU throttle");
}
+ /*
+ * If ACPI describes a slot number for this CPU, we can use it
+ * ensure we get the right value in the "physical id" field
+ * of /proc/cpuinfo
+ */
+ status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+ if (ACPI_SUCCESS(status))
+ arch_fix_phys_package_id(pr->id, object.integer.value);
+
return 0;
}