target/i386/hax/hax-cpus.c

   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-cpus.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 const CpusAccel hax_cpus = {
  78     .create_vcpu_thread = hax_start_vcpu_thread,
  79     .kick_vcpu_thread = hax_kick_vcpu_thread,
  80
  81     .synchronize_post_reset = hax_cpu_synchronize_post_reset,
  82     .synchronize_post_init = hax_cpu_synchronize_post_init,
  83     .synchronize_state = hax_cpu_synchronize_state,
  84     .synchronize_pre_loadvm = hax_cpu_synchronize_pre_loadvm,
  85 };