2 files changed, 53 insertions, 0 deletions

diff --git a/include/io/channel.h b/include/io/channel.h
index 7986c49c71..bdf0bca92a 100644
--- a/include/io/channel.h
+++ b/include/io/channel.h
@@ -160,6 +160,9 @@ struct QIOChannelClass {
                                   void *opaque);
     int (*io_flush)(QIOChannel *ioc,
                     Error **errp);
+    int (*io_peerpid)(QIOChannel *ioc,
+                       unsigned int *pid,
+                       Error **errp);
 };
 
 /* General I/O handling functions */
@@ -981,4 +984,22 @@ int coroutine_mixed_fn qio_channel_writev_full_all(QIOChannel *ioc,
 int qio_channel_flush(QIOChannel *ioc,
                       Error **errp);
 
+/**
+ * qio_channel_get_peercred:
+ * @ioc: the channel object
+ * @pid: pointer to pid
+ * @errp: pointer to a NULL-initialized error object
+ *
+ * Returns the pid of the peer process connected to this socket.
+ *
+ * The use of this function is possible only for connected
+ * AF_UNIX stream sockets and for AF_UNIX stream and datagram
+ * socket pairs on Linux.
+ * Return -1 on error with pid -1 for the non-Linux OS.
+ *
+ */
+int qio_channel_get_peerpid(QIOChannel *ioc,
+                             unsigned int *pid,
+                             Error **errp);
+
 #endif /* QIO_CHANNEL_H */
diff --git a/include/sysemu/kvm_int.h b/include/sysemu/kvm_int.h
index 3f3d13f816..1d8fb1473b 100644
--- a/include/sysemu/kvm_int.h
+++ b/include/sysemu/kvm_int.h
@@ -14,6 +14,9 @@
 #include "qemu/accel.h"
 #include "qemu/queue.h"
 #include "sysemu/kvm.h"
+#include "hw/boards.h"
+#include "hw/i386/topology.h"
+#include "io/channel-socket.h"
 
 typedef struct KVMSlot
 {
@@ -50,6 +53,34 @@ typedef struct KVMMemoryListener {
 
 #define KVM_MSI_HASHTAB_SIZE    256
 
+typedef struct KVMHostTopoInfo {
+    /* Number of package on the Host */
+    unsigned int maxpkgs;
+    /* Number of cpus on the Host */
+    unsigned int maxcpus;
+    /* Number of cpus on each different package */
+    unsigned int *pkg_cpu_count;
+    /* Each package can have different maxticks */
+    unsigned int *maxticks;
+} KVMHostTopoInfo;
+
+struct KVMMsrEnergy {
+    pid_t pid;
+    bool enable;
+    char *socket_path;
+    QIOChannelSocket *sioc;
+    QemuThread msr_thr;
+    unsigned int guest_vcpus;
+    unsigned int guest_vsockets;
+    X86CPUTopoInfo guest_topo_info;
+    KVMHostTopoInfo host_topo;
+    const CPUArchIdList *guest_cpu_list;
+    uint64_t *msr_value;
+    uint64_t msr_unit;
+    uint64_t msr_limit;
+    uint64_t msr_info;
+};
+
 enum KVMDirtyRingReaperState {
     KVM_DIRTY_RING_REAPER_NONE = 0,
     /* The reaper is sleeping */
@@ -117,6 +148,7 @@ struct KVMState
     bool kvm_dirty_ring_with_bitmap;
     uint64_t kvm_eager_split_size;  /* Eager Page Splitting chunk size */
     struct KVMDirtyRingReaper reaper;
+    struct KVMMsrEnergy msr_energy;
     NotifyVmexitOption notify_vmexit;
     uint32_t notify_window;
     uint32_t xen_version;