xen/acpi: ACPI cpu hotplug
This patch implement real Xen ACPI cpu hotplug driver as module.
When loaded, it replaces Xen stub driver.
For booting existed cpus, the driver enumerates them.
For hotadded cpus, which added at runtime and notify OS via
device or container event, the driver is invoked to add them,
parsing cpu information, hypercalling to Xen hypervisor to add
them, and finally setting up new /sys interface for them.
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h
index 2c4fb4b..c57d5f6 100644
--- a/include/xen/interface/platform.h
+++ b/include/xen/interface/platform.h
@@ -324,6 +324,13 @@
};
DEFINE_GUEST_HANDLE_STRUCT(xenpf_cpu_ol);
+#define XENPF_cpu_hotadd 58
+struct xenpf_cpu_hotadd {
+ uint32_t apic_id;
+ uint32_t acpi_id;
+ uint32_t pxm;
+};
+
#define XENPF_mem_hotadd 59
struct xenpf_mem_hotadd {
uint64_t spfn;
@@ -361,6 +368,7 @@
struct xenpf_set_processor_pminfo set_pminfo;
struct xenpf_pcpuinfo pcpu_info;
struct xenpf_cpu_ol cpu_ol;
+ struct xenpf_cpu_hotadd cpu_add;
struct xenpf_mem_hotadd mem_add;
struct xenpf_core_parking core_parking;
uint8_t pad[128];