1 files changed, 24 insertions, 4 deletions

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 3ab4bcb3ca..697c33606a 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -119,6 +119,9 @@ struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX};
 /* Physical Address of PVH entry point read from kernel ELF NOTE */
 static size_t pvh_start_addr;
 
+GlobalProperty pc_compat_4_1[] = {};
+const size_t pc_compat_4_1_len = G_N_ELEMENTS(pc_compat_4_1);
+
 GlobalProperty pc_compat_4_0[] = {};
 const size_t pc_compat_4_0_len = G_N_ELEMENTS(pc_compat_4_0);
 
@@ -1244,17 +1247,21 @@ static void load_linux(PCMachineState *pcms,
 
             /* load initrd */
             if (initrd_filename) {
+                GMappedFile *mapped_file;
                 gsize initrd_size;
                 gchar *initrd_data;
                 GError *gerr = NULL;
 
-                if (!g_file_get_contents(initrd_filename, &initrd_data,
-                            &initrd_size, &gerr)) {
+                mapped_file = g_mapped_file_new(initrd_filename, false, &gerr);
+                if (!mapped_file) {
                     fprintf(stderr, "qemu: error reading initrd %s: %s\n",
                             initrd_filename, gerr->message);
                     exit(1);
                 }
+                pcms->initrd_mapped_file = mapped_file;
 
+                initrd_data = g_mapped_file_get_contents(mapped_file);
+                initrd_size = g_mapped_file_get_length(mapped_file);
                 initrd_max = pcms->below_4g_mem_size - pcmc->acpi_data_size - 1;
                 if (initrd_size >= initrd_max) {
                     fprintf(stderr, "qemu: initrd is too large, cannot support."
@@ -1381,6 +1388,7 @@ static void load_linux(PCMachineState *pcms,
 
     /* load initrd */
     if (initrd_filename) {
+        GMappedFile *mapped_file;
         gsize initrd_size;
         gchar *initrd_data;
         GError *gerr = NULL;
@@ -1390,12 +1398,16 @@ static void load_linux(PCMachineState *pcms,
             exit(1);
         }
 
-        if (!g_file_get_contents(initrd_filename, &initrd_data,
-                                 &initrd_size, &gerr)) {
+        mapped_file = g_mapped_file_new(initrd_filename, false, &gerr);
+        if (!mapped_file) {
             fprintf(stderr, "qemu: error reading initrd %s: %s\n",
                     initrd_filename, gerr->message);
             exit(1);
         }
+        pcms->initrd_mapped_file = mapped_file;
+
+        initrd_data = g_mapped_file_get_contents(mapped_file);
+        initrd_size = g_mapped_file_get_length(mapped_file);
         if (initrd_size >= initrd_max) {
             fprintf(stderr, "qemu: initrd is too large, cannot support."
                     "(max: %"PRIu32", need %"PRId64")\n",
@@ -2831,6 +2843,13 @@ static void pc_machine_reset(MachineState *machine)
     }
 }
 
+static void pc_machine_wakeup(MachineState *machine)
+{
+    cpu_synchronize_all_states();
+    pc_machine_reset(machine);
+    cpu_synchronize_all_post_reset();
+}
+
 static CpuInstanceProperties
 pc_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
 {
@@ -2943,6 +2962,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     mc->block_default_type = IF_IDE;
     mc->max_cpus = 255;
     mc->reset = pc_machine_reset;
+    mc->wakeup = pc_machine_wakeup;
     hc->pre_plug = pc_machine_device_pre_plug_cb;
     hc->plug = pc_machine_device_plug_cb;
     hc->unplug_request = pc_machine_device_unplug_request_cb;