hypervisor_id     255 include/acpi/actbl.h 	u64 hypervisor_id;	/* Hypervisor Vendor ID (ACPI 6.0) */
hypervisor_id     396 include/acpi/actbl.h #define ACPI_FADT_V5_SIZE       (u32) (ACPI_FADT_OFFSET (hypervisor_id))