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path: root/drivers/acpi/processor_pdc.c
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Diffstat (limited to 'drivers/acpi/processor_pdc.c')
-rw-r--r--drivers/acpi/processor_pdc.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c
index 8c3f82c9fff3..18fb04523f93 100644
--- a/drivers/acpi/processor_pdc.c
+++ b/drivers/acpi/processor_pdc.c
@@ -14,6 +14,8 @@
#include <linux/acpi.h>
#include <acpi/processor.h>
+#include <xen/xen.h>
+
#include "internal.h"
static bool __init processor_physically_present(acpi_handle handle)
@@ -47,6 +49,15 @@ static bool __init processor_physically_present(acpi_handle handle)
return false;
}
+ if (xen_initial_domain())
+ /*
+ * When running as a Xen dom0 the number of processors Linux
+ * sees can be different from the real number of processors on
+ * the system, and we still need to execute _PDC for all of
+ * them.
+ */
+ return xen_processor_present(acpi_id);
+
type = (acpi_type == ACPI_TYPE_DEVICE) ? 1 : 0;
cpuid = acpi_get_cpuid(handle, type, acpi_id);