1 /* 2 * QEMU HAX support 3 * 4 * Copyright IBM, Corp. 2008 5 * Red Hat, Inc. 2008 6 * 7 * Authors: 8 * Anthony Liguori <aliguori@us.ibm.com> 9 * Glauber Costa <gcosta@redhat.com> 10 * 11 * Copyright (c) 2011 Intel Corporation 12 * Written by: 13 * Jiang Yunhong<yunhong.jiang@intel.com> 14 * Xin Xiaohui<xiaohui.xin@intel.com> 15 * Zhang Xiantao<xiantao.zhang@intel.com> 16 * 17 * This work is licensed under the terms of the GNU GPL, version 2 or later. 18 * See the COPYING file in the top-level directory. 19 * 20 */ 21 22 #include "qemu/osdep.h" 23 #include "qemu/error-report.h" 24 #include "qemu/main-loop.h" 25 #include "sysemu/runstate.h" 26 #include "sysemu/cpus.h" 27 #include "qemu/guest-random.h" 28 29 #include "hax-accel-ops.h" 30 31 static void *hax_cpu_thread_fn(void *arg) 32 { 33 CPUState *cpu = arg; 34 int r; 35 36 rcu_register_thread(); 37 qemu_mutex_lock_iothread(); 38 qemu_thread_get_self(cpu->thread); 39 40 cpu->thread_id = qemu_get_thread_id(); 41 current_cpu = cpu; 42 hax_init_vcpu(cpu); 43 cpu_thread_signal_created(cpu); 44 qemu_guest_random_seed_thread_part2(cpu->random_seed); 45 46 do { 47 if (cpu_can_run(cpu)) { 48 r = hax_smp_cpu_exec(cpu); 49 if (r == EXCP_DEBUG) { 50 cpu_handle_guest_debug(cpu); 51 } 52 } 53 54 qemu_wait_io_event(cpu); 55 } while (!cpu->unplug || cpu_can_run(cpu)); 56 rcu_unregister_thread(); 57 return NULL; 58 } 59 60 static void hax_start_vcpu_thread(CPUState *cpu) 61 { 62 char thread_name[VCPU_THREAD_NAME_SIZE]; 63 64 cpu->thread = g_malloc0(sizeof(QemuThread)); 65 cpu->halt_cond = g_malloc0(sizeof(QemuCond)); 66 qemu_cond_init(cpu->halt_cond); 67 68 snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HAX", 69 cpu->cpu_index); 70 qemu_thread_create(cpu->thread, thread_name, hax_cpu_thread_fn, 71 cpu, QEMU_THREAD_JOINABLE); 72 #ifdef _WIN32 73 cpu->hThread = qemu_thread_get_handle(cpu->thread); 74 #endif 75 } 76 77 static void hax_accel_ops_class_init(ObjectClass *oc, void *data) 78 { 79 AccelOpsClass *ops = ACCEL_OPS_CLASS(oc); 80 81 ops->create_vcpu_thread = hax_start_vcpu_thread; 82 ops->kick_vcpu_thread = hax_kick_vcpu_thread; 83 84 ops->synchronize_post_reset = hax_cpu_synchronize_post_reset; 85 ops->synchronize_post_init = hax_cpu_synchronize_post_init; 86 ops->synchronize_state = hax_cpu_synchronize_state; 87 ops->synchronize_pre_loadvm = hax_cpu_synchronize_pre_loadvm; 88 } 89 90 static const TypeInfo hax_accel_ops_type = { 91 .name = ACCEL_OPS_NAME("hax"), 92 93 .parent = TYPE_ACCEL_OPS, 94 .class_init = hax_accel_ops_class_init, 95 .abstract = true, 96 }; 97 98 static void hax_accel_ops_register_types(void) 99 { 100 type_register_static(&hax_accel_ops_type); 101 } 102 type_init(hax_accel_ops_register_types); 103