diff --git a/cpu-all.h b/cpu-all.h
index 87b0f86667..4f4631d79c 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -863,10 +863,14 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
 extern int phys_ram_fd;
 extern ram_addr_t ram_size;
 
+/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
+#define RAM_PREALLOC_MASK   (1 << 0)
+
 typedef struct RAMBlock {
     uint8_t *host;
     ram_addr_t offset;
     ram_addr_t length;
+    uint32_t flags;
     char idstr[256];
     QLIST_ENTRY(RAMBlock) next;
 #if defined(__linux__) && !defined(TARGET_S390X)
@@ -971,8 +975,4 @@ void dump_exec_info(FILE *f, fprintf_function cpu_fprintf);
 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
                         uint8_t *buf, int len, int is_write);
 
-void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
-                        uint64_t mcg_status, uint64_t addr, uint64_t misc,
-                        int broadcast);
-
 #endif /* CPU_ALL_H */
diff --git a/cpu-common.h b/cpu-common.h
index 54d21d4717..ef4e8dab7a 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -50,6 +50,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
                         ram_addr_t size, void *host);
 ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size);
 void qemu_ram_free(ram_addr_t addr);
+void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
 /* This should only be used for ram local to a device.  */
 void *qemu_get_ram_ptr(ram_addr_t addr);
 /* Same but slower, to use for migration, where the order of
diff --git a/cpu-defs.h b/cpu-defs.h
index 2b59fa6fb0..db48a7afef 100644
--- a/cpu-defs.h
+++ b/cpu-defs.h
@@ -203,6 +203,7 @@ typedef struct CPUWatchpoint {
     int nr_cores;  /* number of cores within this CPU package */        \
     int nr_threads;/* number of threads within this CPU */              \
     int running; /* Nonzero if cpu is currently running(usermode).  */  \
+    int thread_id;                                                      \
     /* user data */                                                     \
     void *opaque;                                                       \
                                                                         \
diff --git a/cpu-exec.c b/cpu-exec.c
index 34eaedca04..5cc937904a 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -196,6 +196,30 @@ static inline TranslationBlock *tb_find_fast(void)
     return tb;
 }
 
+static CPUDebugExcpHandler *debug_excp_handler;
+
+CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
+{
+    CPUDebugExcpHandler *old_handler = debug_excp_handler;
+
+    debug_excp_handler = handler;
+    return old_handler;
+}
+
+static void cpu_handle_debug_exception(CPUState *env)
+{
+    CPUWatchpoint *wp;
+
+    if (!env->watchpoint_hit) {
+        QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+            wp->flags &= ~BP_WATCHPOINT_HIT;
+        }
+    }
+    if (debug_excp_handler) {
+        debug_excp_handler(env);
+    }
+}
+
 /* main execution loop */
 
 volatile sig_atomic_t exit_request;
@@ -269,6 +293,9 @@ int cpu_exec(CPUState *env1)
                 if (env->exception_index >= EXCP_INTERRUPT) {
                     /* exit request from the cpu execution loop */
                     ret = env->exception_index;
+                    if (ret == EXCP_DEBUG) {
+                        cpu_handle_debug_exception(env);
+                    }
                     break;
                 } else {
 #if defined(CONFIG_USER_ONLY)
diff --git a/cpus.c b/cpus.c
index b6e658da62..41bec7cc56 100644
--- a/cpus.c
+++ b/cpus.c
@@ -148,7 +148,8 @@ static bool cpu_thread_is_idle(CPUState *env)
     if (env->stopped || !vm_running) {
         return true;
     }
-    if (!env->halted || qemu_cpu_has_work(env)) {
+    if (!env->halted || qemu_cpu_has_work(env) ||
+        (kvm_enabled() && kvm_irqchip_in_kernel())) {
         return false;
     }
     return true;
@@ -166,29 +167,8 @@ static bool all_cpu_threads_idle(void)
     return true;
 }
 
-static CPUDebugExcpHandler *debug_excp_handler;
-
-CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
+static void cpu_handle_guest_debug(CPUState *env)
 {
-    CPUDebugExcpHandler *old_handler = debug_excp_handler;
-
-    debug_excp_handler = handler;
-    return old_handler;
-}
-
-static void cpu_handle_debug_exception(CPUState *env)
-{
-    CPUWatchpoint *wp;
-
-    if (!env->watchpoint_hit) {
-        QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
-            wp->flags &= ~BP_WATCHPOINT_HIT;
-        }
-    }
-    if (debug_excp_handler) {
-        debug_excp_handler(env);
-    }
-
     gdb_set_stop_cpu(env);
     qemu_system_debug_request();
 #ifdef CONFIG_IOTHREAD
@@ -245,11 +225,58 @@ static void qemu_init_sigbus(void)
     prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0);
 }
 
+static void qemu_kvm_eat_signals(CPUState *env)
+{
+    struct timespec ts = { 0, 0 };
+    siginfo_t siginfo;
+    sigset_t waitset;
+    sigset_t chkset;
+    int r;
+
+    sigemptyset(&waitset);
+    sigaddset(&waitset, SIG_IPI);
+    sigaddset(&waitset, SIGBUS);
+
+    do {
+        r = sigtimedwait(&waitset, &siginfo, &ts);
+        if (r == -1 && !(errno == EAGAIN || errno == EINTR)) {
+            perror("sigtimedwait");
+            exit(1);
+        }
+
+        switch (r) {
+        case SIGBUS:
+            if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
+                sigbus_reraise();
+            }
+            break;
+        default:
+            break;
+        }
+
+        r = sigpending(&chkset);
+        if (r == -1) {
+            perror("sigpending");
+            exit(1);
+        }
+    } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
+
+#ifndef CONFIG_IOTHREAD
+    if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) {
+        qemu_notify_event();
+    }
+#endif
+}
+
 #else /* !CONFIG_LINUX */
 
 static void qemu_init_sigbus(void)
 {
 }
+
+static void qemu_kvm_eat_signals(CPUState *env)
+{
+}
 #endif /* !CONFIG_LINUX */
 
 #ifndef _WIN32
@@ -455,49 +482,6 @@ static void qemu_tcg_init_cpu_signals(void)
 #endif
 }
 
-static void qemu_kvm_eat_signals(CPUState *env)
-{
-    struct timespec ts = { 0, 0 };
-    siginfo_t siginfo;
-    sigset_t waitset;
-    sigset_t chkset;
-    int r;
-
-    sigemptyset(&waitset);
-    sigaddset(&waitset, SIG_IPI);
-    sigaddset(&waitset, SIGBUS);
-
-    do {
-        r = sigtimedwait(&waitset, &siginfo, &ts);
-        if (r == -1 && !(errno == EAGAIN || errno == EINTR)) {
-            perror("sigtimedwait");
-            exit(1);
-        }
-
-        switch (r) {
-        case SIGBUS:
-            if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
-                sigbus_reraise();
-            }
-            break;
-        default:
-            break;
-        }
-
-        r = sigpending(&chkset);
-        if (r == -1) {
-            perror("sigpending");
-            exit(1);
-        }
-    } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
-
-#ifndef CONFIG_IOTHREAD
-    if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) {
-        qemu_notify_event();
-    }
-#endif
-}
-
 #else /* _WIN32 */
 
 HANDLE qemu_event_handle;
@@ -526,10 +510,6 @@ static void qemu_event_increment(void)
     }
 }
 
-static void qemu_kvm_eat_signals(CPUState *env)
-{
-}
-
 static int qemu_signal_init(void)
 {
     return 0;
@@ -796,6 +776,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
 
     qemu_mutex_lock(&qemu_global_mutex);
     qemu_thread_get_self(env->thread);
+    env->thread_id = qemu_get_thread_id();
 
     r = kvm_init_vcpu(env);
     if (r < 0) {
@@ -818,7 +799,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
         if (cpu_can_run(env)) {
             r = kvm_cpu_exec(env);
             if (r == EXCP_DEBUG) {
-                cpu_handle_debug_exception(env);
+                cpu_handle_guest_debug(env);
             }
         }
         qemu_kvm_wait_io_event(env);
@@ -837,6 +818,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
     /* signal CPU creation */
     qemu_mutex_lock(&qemu_global_mutex);
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
+        env->thread_id = qemu_get_thread_id();
         env->created = 1;
     }
     qemu_cond_signal(&qemu_cpu_cond);
@@ -1110,7 +1092,7 @@ bool cpu_exec_all(void)
                 r = tcg_cpu_exec(env);
             }
             if (r == EXCP_DEBUG) {
-                cpu_handle_debug_exception(env);
+                cpu_handle_guest_debug(env);
                 break;
             }
         } else if (env->stop || env->stopped) {
diff --git a/exec.c b/exec.c
index 3d78063437..964ce318fb 100644
--- a/exec.c
+++ b/exec.c
@@ -638,6 +638,9 @@ void cpu_exec_init(CPUState *env)
     env->numa_node = 0;
     QTAILQ_INIT(&env->breakpoints);
     QTAILQ_INIT(&env->watchpoints);
+#ifndef CONFIG_USER_ONLY
+    env->thread_id = qemu_get_thread_id();
+#endif
     *penv = env;
 #if defined(CONFIG_USER_ONLY)
     cpu_list_unlock();
@@ -2867,6 +2870,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
 
     if (host) {
         new_block->host = host;
+        new_block->flags |= RAM_PREALLOC_MASK;
     } else {
         if (mem_path) {
 #if defined (__linux__) && !defined(TARGET_S390X)
@@ -2920,7 +2924,9 @@ void qemu_ram_free(ram_addr_t addr)
     QLIST_FOREACH(block, &ram_list.blocks, next) {
         if (addr == block->offset) {
             QLIST_REMOVE(block, next);
-            if (mem_path) {
+            if (block->flags & RAM_PREALLOC_MASK) {
+                ;
+            } else if (mem_path) {
 #if defined (__linux__) && !defined(TARGET_S390X)
                 if (block->fd) {
                     munmap(block->host, block->length);
@@ -2928,6 +2934,8 @@ void qemu_ram_free(ram_addr_t addr)
                 } else {
                     qemu_vfree(block->host);
                 }
+#else
+                abort();
 #endif
             } else {
 #if defined(TARGET_S390X) && defined(CONFIG_KVM)
@@ -2943,6 +2951,66 @@ void qemu_ram_free(ram_addr_t addr)
 
 }
 
+#ifndef _WIN32
+void qemu_ram_remap(ram_addr_t addr, ram_addr_t length)
+{
+    RAMBlock *block;
+    ram_addr_t offset;
+    int flags;
+    void *area, *vaddr;
+
+    QLIST_FOREACH(block, &ram_list.blocks, next) {
+        offset = addr - block->offset;
+        if (offset < block->length) {
+            vaddr = block->host + offset;
+            if (block->flags & RAM_PREALLOC_MASK) {
+                ;
+            } else {
+                flags = MAP_FIXED;
+                munmap(vaddr, length);
+                if (mem_path) {
+#if defined(__linux__) && !defined(TARGET_S390X)
+                    if (block->fd) {
+#ifdef MAP_POPULATE
+                        flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED :
+                            MAP_PRIVATE;
+#else
+                        flags |= MAP_PRIVATE;
+#endif
+                        area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
+                                    flags, block->fd, offset);
+                    } else {
+                        flags |= MAP_PRIVATE | MAP_ANONYMOUS;
+                        area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
+                                    flags, -1, 0);
+                    }
+#else
+                    abort();
+#endif
+                } else {
+#if defined(TARGET_S390X) && defined(CONFIG_KVM)
+                    flags |= MAP_SHARED | MAP_ANONYMOUS;
+                    area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE,
+                                flags, -1, 0);
+#else
+                    flags |= MAP_PRIVATE | MAP_ANONYMOUS;
+                    area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
+                                flags, -1, 0);
+#endif
+                }
+                if (area != vaddr) {
+                    fprintf(stderr, "Could not remap addr: %lx@%lx\n",
+                            length, addr);
+                    exit(1);
+                }
+                qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE);
+            }
+            return;
+        }
+    }
+}
+#endif /* !_WIN32 */
+
 /* Return a host pointer to ram allocated with qemu_ram_alloc.
    With the exception of the softmmu code in this file, this should
    only be used for local memory (e.g. video ram) that the device owns,
diff --git a/kvm-all.c b/kvm-all.c
index e6a7de4722..1d7e8eabf4 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -211,6 +211,7 @@ int kvm_init_vcpu(CPUState *env)
 
     env->kvm_fd = ret;
     env->kvm_state = s;
+    env->kvm_vcpu_dirty = 1;
 
     mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
     if (mmap_size < 0) {
@@ -830,7 +831,7 @@ static int kvm_handle_internal_error(CPUState *env, struct kvm_run *run)
         fprintf(stderr, "emulation failure\n");
         if (!kvm_arch_stop_on_emulation_error(env)) {
             cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
-            return 0;
+            return EXCP_INTERRUPT;
         }
     }
     /* FIXME: Should trigger a qmp message to let management know
@@ -889,11 +890,11 @@ void kvm_cpu_synchronize_post_init(CPUState *env)
 int kvm_cpu_exec(CPUState *env)
 {
     struct kvm_run *run = env->kvm_run;
-    int ret;
+    int ret, run_ret;
 
     DPRINTF("kvm_cpu_exec()\n");
 
-    if (kvm_arch_process_irqchip_events(env)) {
+    if (kvm_arch_process_async_events(env)) {
         env->exit_request = 0;
         return EXCP_HLT;
     }
@@ -919,7 +920,7 @@ int kvm_cpu_exec(CPUState *env)
         cpu_single_env = NULL;
         qemu_mutex_unlock_iothread();
 
-        ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
+        run_ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
 
         qemu_mutex_lock_iothread();
         cpu_single_env = env;
@@ -927,18 +928,16 @@ int kvm_cpu_exec(CPUState *env)
 
         kvm_flush_coalesced_mmio_buffer();
 
-        if (ret == -EINTR || ret == -EAGAIN) {
-            DPRINTF("io window exit\n");
-            ret = 0;
-            break;
-        }
-
-        if (ret < 0) {
-            DPRINTF("kvm run failed %s\n", strerror(-ret));
+        if (run_ret < 0) {
+            if (run_ret == -EINTR || run_ret == -EAGAIN) {
+                DPRINTF("io window exit\n");
+                ret = EXCP_INTERRUPT;
+                break;
+            }
+            DPRINTF("kvm run failed %s\n", strerror(-run_ret));
             abort();
         }
 
-        ret = 0; /* exit loop */
         switch (run->exit_reason) {
         case KVM_EXIT_IO:
             DPRINTF("handle_io\n");
@@ -947,7 +946,7 @@ int kvm_cpu_exec(CPUState *env)
                           run->io.direction,
                           run->io.size,
                           run->io.count);
-            ret = 1;
+            ret = 0;
             break;
         case KVM_EXIT_MMIO:
             DPRINTF("handle_mmio\n");
@@ -955,14 +954,16 @@ int kvm_cpu_exec(CPUState *env)
                                    run->mmio.data,
                                    run->mmio.len,
                                    run->mmio.is_write);
-            ret = 1;
+            ret = 0;
             break;
         case KVM_EXIT_IRQ_WINDOW_OPEN:
             DPRINTF("irq_window_open\n");
+            ret = EXCP_INTERRUPT;
             break;
         case KVM_EXIT_SHUTDOWN:
             DPRINTF("shutdown\n");
             qemu_system_reset_request();
+            ret = EXCP_INTERRUPT;
             break;
         case KVM_EXIT_UNKNOWN:
             fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n",
@@ -974,31 +975,18 @@ int kvm_cpu_exec(CPUState *env)
             ret = kvm_handle_internal_error(env, run);
             break;
 #endif
-        case KVM_EXIT_DEBUG:
-            DPRINTF("kvm_exit_debug\n");
-#ifdef KVM_CAP_SET_GUEST_DEBUG
-            if (kvm_arch_debug(&run->debug.arch)) {
-                ret = EXCP_DEBUG;
-                goto out;
-            }
-            /* re-enter, this exception was guest-internal */
-            ret = 1;
-#endif /* KVM_CAP_SET_GUEST_DEBUG */
-            break;
         default:
             DPRINTF("kvm_arch_handle_exit\n");
             ret = kvm_arch_handle_exit(env, run);
             break;
         }
-    } while (ret > 0);
+    } while (ret == 0);
 
     if (ret < 0) {
         cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
         vm_stop(VMSTOP_PANIC);
     }
-    ret = EXCP_INTERRUPT;
 
-out:
     env->exit_request = 0;
     cpu_single_env = NULL;
     return ret;
diff --git a/kvm.h b/kvm.h
index 59b2c29fd9..d565dba1da 100644
--- a/kvm.h
+++ b/kvm.h
@@ -102,7 +102,7 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run);
 
 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
 
-int kvm_arch_process_irqchip_events(CPUState *env);
+int kvm_arch_process_async_events(CPUState *env);
 
 int kvm_arch_get_registers(CPUState *env);
 
@@ -136,8 +136,6 @@ struct kvm_sw_breakpoint {
 
 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 
-int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
-
 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
                                                  target_ulong pc);
 
diff --git a/monitor.c b/monitor.c
index 413c963e34..552e951f7d 100644
--- a/monitor.c
+++ b/monitor.c
@@ -897,6 +897,9 @@ static void print_cpu_iter(QObject *obj, void *opaque)
         monitor_printf(mon, " (halted)");
     }
 
+    monitor_printf(mon, " thread_id=%" PRId64 " ",
+                   qdict_get_int(cpu, "thread_id"));
+
     monitor_printf(mon, "\n");
 }
 
@@ -941,6 +944,7 @@ static void do_info_cpus(Monitor *mon, QObject **ret_data)
 #elif defined(TARGET_MIPS)
         qdict_put(cpu, "PC", qint_from_int(env->active_tc.PC));
 #endif
+        qdict_put(cpu, "thread_id", qint_from_int(env->thread_id));
 
         qlist_append(cpu_list, cpu);
     }
@@ -2709,12 +2713,15 @@ static void do_inject_mce(Monitor *mon, const QDict *qdict)
     uint64_t mcg_status = qdict_get_int(qdict, "mcg_status");
     uint64_t addr = qdict_get_int(qdict, "addr");
     uint64_t misc = qdict_get_int(qdict, "misc");
-    int broadcast = qdict_get_try_bool(qdict, "broadcast", 0);
+    int flags = MCE_INJECT_UNCOND_AO;
 
+    if (qdict_get_try_bool(qdict, "broadcast", 0)) {
+        flags |= MCE_INJECT_BROADCAST;
+    }
     for (cenv = first_cpu; cenv != NULL; cenv = cenv->next_cpu) {
-        if (cenv->cpu_index == cpu_index && cenv->mcg_cap) {
-            cpu_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc,
-                               broadcast);
+        if (cenv->cpu_index == cpu_index) {
+            cpu_x86_inject_mce(mon, cenv, bank, status, mcg_status, addr, misc,
+                               flags);
             break;
         }
     }
diff --git a/os-posix.c b/os-posix.c
index 38c29d1afe..7971f8620b 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -41,6 +41,7 @@
 
 #ifdef CONFIG_LINUX
 #include <sys/prctl.h>
+#include <sys/syscall.h>
 #endif
 
 #ifdef CONFIG_EVENTFD
@@ -382,3 +383,12 @@ int qemu_create_pidfile(const char *filename)
 
     return 0;
 }
+
+int qemu_get_thread_id(void)
+{
+#if defined (__linux__)
+    return syscall(SYS_gettid);
+#else
+    return getpid();
+#endif
+}
diff --git a/os-win32.c b/os-win32.c
index c971d928ab..d6d54c60b9 100644
--- a/os-win32.c
+++ b/os-win32.c
@@ -266,3 +266,8 @@ int qemu_create_pidfile(const char *filename)
     }
     return 0;
 }
+
+int qemu_get_thread_id(void)
+{
+    return GetCurrentThreadId();
+}
diff --git a/osdep.h b/osdep.h
index 5e4886030e..970d767078 100644
--- a/osdep.h
+++ b/osdep.h
@@ -128,6 +128,7 @@ void qemu_vfree(void *ptr);
 int qemu_madvise(void *addr, size_t len, int advice);
 
 int qemu_create_pidfile(const char *filename);
+int qemu_get_thread_id(void);
 
 #ifdef _WIN32
 static inline void qemu_timersub(const struct timeval *val1,
diff --git a/qemu-common.h b/qemu-common.h
index 3fe1719d03..7a96dd14e8 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -18,6 +18,9 @@ typedef struct QEMUFile QEMUFile;
 typedef struct QEMUBH QEMUBH;
 typedef struct DeviceState DeviceState;
 
+struct Monitor;
+typedef struct Monitor Monitor;
+
 /* we put basic includes here to avoid repeating them in device drivers */
 #include <stdlib.h>
 #include <stdio.h>
@@ -327,9 +330,6 @@ void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
 void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
                             size_t skip);
 
-struct Monitor;
-typedef struct Monitor Monitor;
-
 /* Convert a byte between binary and BCD.  */
 static inline uint8_t to_bcd(uint8_t val)
 {
diff --git a/qmp-commands.hx b/qmp-commands.hx
index df40a3d42e..1f72a8d422 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1194,6 +1194,7 @@ Return a json-array. Each CPU is represented by a json-object, which contains:
      "nip": PPC (json-int)
      "pc" and "npc": sparc (json-int)
      "PC": mips (json-int)
+- "thread_id": ID of the underlying host thread (json-int)
 
 Example:
 
@@ -1205,12 +1206,14 @@ Example:
             "current":true,
             "halted":false,
             "pc":3227107138
+            "thread_id":3134
          },
          {
             "CPU":1,
             "current":false,
             "halted":true,
             "pc":7108165
+            "thread_id":3135
          }
       ]
    }
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 5f1df8b4d3..c7047d5912 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -685,7 +685,7 @@ typedef struct CPUX86State {
 
     uint64_t tsc;
 
-    uint64_t pat;
+    uint64_t mcg_status;
 
     /* exception/interrupt handling */
     int error_code;
@@ -705,6 +705,8 @@ typedef struct CPUX86State {
 
     CPU_COMMON
 
+    uint64_t pat;
+
     /* processor features (e.g. for CPUID insn) */
     uint32_t cpuid_level;
     uint32_t cpuid_vendor1;
@@ -741,7 +743,6 @@ typedef struct CPUX86State {
     struct DeviceState *apic_state;
 
     uint64_t mcg_cap;
-    uint64_t mcg_status;
     uint64_t mcg_ctl;
     uint64_t mce_banks[MCE_BANKS_DEF*4];
 
@@ -985,4 +986,12 @@ static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 
 void do_cpu_init(CPUState *env);
 void do_cpu_sipi(CPUState *env);
+
+#define MCE_INJECT_BROADCAST    1
+#define MCE_INJECT_UNCOND_AO    2
+
+void cpu_x86_inject_mce(Monitor *mon, CPUState *cenv, int bank,
+                        uint64_t status, uint64_t mcg_status, uint64_t addr,
+                        uint64_t misc, int flags);
+
 #endif /* CPU_I386_H */
diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index 5382a283f5..814d13e767 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -847,7 +847,6 @@ int cpu_x86_register (CPUX86State *env, const char *cpu_model)
     env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16);
     env->cpuid_version |= def->stepping;
     env->cpuid_features = def->features;
-    env->pat = 0x0007040600070406ULL;
     env->cpuid_ext_features = def->ext_features;
     env->cpuid_ext2_features = def->ext2_features;
     env->cpuid_ext3_features = def->ext3_features;
diff --git a/target-i386/exec.h b/target-i386/exec.h
index 3e7386e91c..6f9f709d8a 100644
--- a/target-i386/exec.h
+++ b/target-i386/exec.h
@@ -293,15 +293,12 @@ static inline void load_eflags(int eflags, int update_mask)
 
 static inline int cpu_has_work(CPUState *env)
 {
-    int work;
-
-    work = (env->interrupt_request & CPU_INTERRUPT_HARD) &&
-           (env->eflags & IF_MASK);
-    work |= env->interrupt_request & CPU_INTERRUPT_NMI;
-    work |= env->interrupt_request & CPU_INTERRUPT_INIT;
-    work |= env->interrupt_request & CPU_INTERRUPT_SIPI;
-
-    return work;
+    return ((env->interrupt_request & CPU_INTERRUPT_HARD) &&
+            (env->eflags & IF_MASK)) ||
+           (env->interrupt_request & (CPU_INTERRUPT_NMI |
+                                      CPU_INTERRUPT_INIT |
+                                      CPU_INTERRUPT_SIPI |
+                                      CPU_INTERRUPT_MCE));
 }
 
 /* load efer and update the corresponding hflags. XXX: do consistency
diff --git a/target-i386/helper.c b/target-i386/helper.c
index f0c546df5c..d15fca591e 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -27,7 +27,10 @@
 #include "exec-all.h"
 #include "qemu-common.h"
 #include "kvm.h"
-#include "kvm_x86.h"
+#ifndef CONFIG_USER_ONLY
+#include "sysemu.h"
+#include "monitor.h"
+#endif
 
 //#define DEBUG_MMU
 
@@ -96,13 +99,13 @@ void cpu_reset(CPUX86State *env)
 
     env->mxcsr = 0x1f80;
 
+    env->pat = 0x0007040600070406ULL;
+
     memset(env->dr, 0, sizeof(env->dr));
     env->dr[6] = DR6_FIXED_1;
     env->dr[7] = DR7_FIXED_1;
     cpu_breakpoint_remove_all(env, BP_CPU);
     cpu_watchpoint_remove_all(env, BP_CPU);
-
-    env->mcg_status = 0;
 }
 
 void cpu_x86_close(CPUX86State *env)
@@ -1065,91 +1068,138 @@ static void breakpoint_handler(CPUState *env)
         prev_debug_excp_handler(env);
 }
 
-/* This should come from sysemu.h - if we could include it here... */
-void qemu_system_reset_request(void);
+typedef struct MCEInjectionParams {
+    Monitor *mon;
+    CPUState *env;
+    int bank;
+    uint64_t status;
+    uint64_t mcg_status;
+    uint64_t addr;
+    uint64_t misc;
+    int flags;
+} MCEInjectionParams;
 
-static void qemu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
-                        uint64_t mcg_status, uint64_t addr, uint64_t misc)
+static void do_inject_x86_mce(void *data)
 {
-    uint64_t mcg_cap = cenv->mcg_cap;
-    uint64_t *banks = cenv->mce_banks;
+    MCEInjectionParams *params = data;
+    CPUState *cenv = params->env;
+    uint64_t *banks = cenv->mce_banks + 4 * params->bank;
+
+    cpu_synchronize_state(cenv);
 
     /*
-     * if MSR_MCG_CTL is not all 1s, the uncorrected error
-     * reporting is disabled
+     * If there is an MCE exception being processed, ignore this SRAO MCE
+     * unless unconditional injection was requested.
      */
-    if ((status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) &&
-        cenv->mcg_ctl != ~(uint64_t)0)
+    if (!(params->flags & MCE_INJECT_UNCOND_AO)
+        && !(params->status & MCI_STATUS_AR)
+        && (cenv->mcg_status & MCG_STATUS_MCIP)) {
         return;
-    banks += 4 * bank;
-    /*
-     * if MSR_MCi_CTL is not all 1s, the uncorrected error
-     * reporting is disabled for the bank
-     */
-    if ((status & MCI_STATUS_UC) && banks[0] != ~(uint64_t)0)
-        return;
-    if (status & MCI_STATUS_UC) {
+    }
+
+    if (params->status & MCI_STATUS_UC) {
+        /*
+         * if MSR_MCG_CTL is not all 1s, the uncorrected error
+         * reporting is disabled
+         */
+        if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
+            monitor_printf(params->mon,
+                           "CPU %d: Uncorrected error reporting disabled\n",
+                           cenv->cpu_index);
+            return;
+        }
+
+        /*
+         * if MSR_MCi_CTL is not all 1s, the uncorrected error
+         * reporting is disabled for the bank
+         */
+        if (banks[0] != ~(uint64_t)0) {
+            monitor_printf(params->mon,
+                           "CPU %d: Uncorrected error reporting disabled for"
+                           " bank %d\n",
+                           cenv->cpu_index, params->bank);
+            return;
+        }
+
         if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
             !(cenv->cr[4] & CR4_MCE_MASK)) {
-            fprintf(stderr, "injects mce exception while previous "
-                    "one is in progress!\n");
+            monitor_printf(params->mon,
+                           "CPU %d: Previous MCE still in progress, raising"
+                           " triple fault\n",
+                           cenv->cpu_index);
             qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
             qemu_system_reset_request();
             return;
         }
-        if (banks[1] & MCI_STATUS_VAL)
-            status |= MCI_STATUS_OVER;
-        banks[2] = addr;
-        banks[3] = misc;
-        cenv->mcg_status = mcg_status;
-        banks[1] = status;
+        if (banks[1] & MCI_STATUS_VAL) {
+            params->status |= MCI_STATUS_OVER;
+        }
+        banks[2] = params->addr;
+        banks[3] = params->misc;
+        cenv->mcg_status = params->mcg_status;
+        banks[1] = params->status;
         cpu_interrupt(cenv, CPU_INTERRUPT_MCE);
     } else if (!(banks[1] & MCI_STATUS_VAL)
                || !(banks[1] & MCI_STATUS_UC)) {
-        if (banks[1] & MCI_STATUS_VAL)
-            status |= MCI_STATUS_OVER;
-        banks[2] = addr;
-        banks[3] = misc;
-        banks[1] = status;
-    } else
+        if (banks[1] & MCI_STATUS_VAL) {
+            params->status |= MCI_STATUS_OVER;
+        }
+        banks[2] = params->addr;
+        banks[3] = params->misc;
+        banks[1] = params->status;
+    } else {
         banks[1] |= MCI_STATUS_OVER;
+    }
 }
 
-void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
-                        uint64_t mcg_status, uint64_t addr, uint64_t misc,
-                        int broadcast)
+void cpu_x86_inject_mce(Monitor *mon, CPUState *cenv, int bank,
+                        uint64_t status, uint64_t mcg_status, uint64_t addr,
+                        uint64_t misc, int flags)
 {
+    MCEInjectionParams params = {
+        .mon = mon,
+        .env = cenv,
+        .bank = bank,
+        .status = status,
+        .mcg_status = mcg_status,
+        .addr = addr,
+        .misc = misc,
+        .flags = flags,
+    };
     unsigned bank_num = cenv->mcg_cap & 0xff;
     CPUState *env;
-    int flag = 0;
 
-    if (bank >= bank_num || !(status & MCI_STATUS_VAL)) {
+    if (!cenv->mcg_cap) {
+        monitor_printf(mon, "MCE injection not supported\n");
+        return;
+    }
+    if (bank >= bank_num) {
+        monitor_printf(mon, "Invalid MCE bank number\n");
+        return;
+    }
+    if (!(status & MCI_STATUS_VAL)) {
+        monitor_printf(mon, "Invalid MCE status code\n");
+        return;
+    }
+    if ((flags & MCE_INJECT_BROADCAST)
+        && !cpu_x86_support_mca_broadcast(cenv)) {
+        monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
         return;
     }
 
-    if (broadcast) {
-        if (!cpu_x86_support_mca_broadcast(cenv)) {
-            fprintf(stderr, "Current CPU does not support broadcast\n");
-            return;
-        }
-    }
-
-    if (kvm_enabled()) {
-        if (broadcast) {
-            flag |= MCE_BROADCAST;
-        }
-
-        kvm_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc, flag);
-    } else {
-        qemu_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc);
-        if (broadcast) {
-            for (env = first_cpu; env != NULL; env = env->next_cpu) {
-                if (cenv == env) {
-                    continue;
-                }
-                qemu_inject_x86_mce(env, 1, MCI_STATUS_VAL | MCI_STATUS_UC,
-                                    MCG_STATUS_MCIP | MCG_STATUS_RIPV, 0, 0);
+    run_on_cpu(cenv, do_inject_x86_mce, &params);
+    if (flags & MCE_INJECT_BROADCAST) {
+        params.bank = 1;
+        params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
+        params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
+        params.addr = 0;
+        params.misc = 0;
+        for (env = first_cpu; env != NULL; env = env->next_cpu) {
+            if (cenv == env) {
+                continue;
             }
+            params.env = env;
+            run_on_cpu(cenv, do_inject_x86_mce, &params);
         }
     }
 }
@@ -1157,15 +1207,16 @@ void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
 
 static void mce_init(CPUX86State *cenv)
 {
-    unsigned int bank, bank_num;
+    unsigned int bank;
 
-    if (((cenv->cpuid_version >> 8)&0xf) >= 6
-        && (cenv->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)) {
+    if (((cenv->cpuid_version >> 8) & 0xf) >= 6
+        && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
+            (CPUID_MCE | CPUID_MCA)) {
         cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
         cenv->mcg_ctl = ~(uint64_t)0;
-        bank_num = MCE_BANKS_DEF;
-        for (bank = 0; bank < bank_num; bank++)
-            cenv->mce_banks[bank*4] = ~(uint64_t)0;
+        for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
+            cenv->mce_banks[bank * 4] = ~(uint64_t)0;
+        }
     }
 }
 
@@ -1231,8 +1282,11 @@ CPUX86State *cpu_x86_init(const char *cpu_model)
 void do_cpu_init(CPUState *env)
 {
     int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
+    uint64_t pat = env->pat;
+
     cpu_reset(env);
     env->interrupt_request = sipi;
+    env->pat = pat;
     apic_init_reset(env->apic_state);
     env->halted = !cpu_is_bsp(env);
 }
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 1f12cbf19e..a13599db81 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -28,7 +28,6 @@
 #include "hw/pc.h"
 #include "hw/apic.h"
 #include "ioport.h"
-#include "kvm_x86.h"
 
 #ifdef CONFIG_KVM_PARA
 #include <linux/kvm_para.h>
@@ -172,9 +171,42 @@ static int get_para_features(CPUState *env)
 #endif
     return features;
 }
-#endif
+#endif /* CONFIG_KVM_PARA */
+
+typedef struct HWPoisonPage {
+    ram_addr_t ram_addr;
+    QLIST_ENTRY(HWPoisonPage) list;
+} HWPoisonPage;
+
+static QLIST_HEAD(, HWPoisonPage) hwpoison_page_list =
+    QLIST_HEAD_INITIALIZER(hwpoison_page_list);
+
+static void kvm_unpoison_all(void *param)
+{
+    HWPoisonPage *page, *next_page;
+
+    QLIST_FOREACH_SAFE(page, &hwpoison_page_list, list, next_page) {
+        QLIST_REMOVE(page, list);
+        qemu_ram_remap(page->ram_addr, TARGET_PAGE_SIZE);
+        qemu_free(page);
+    }
+}
 
 #ifdef KVM_CAP_MCE
+static void kvm_hwpoison_page_add(ram_addr_t ram_addr)
+{
+    HWPoisonPage *page;
+
+    QLIST_FOREACH(page, &hwpoison_page_list, list) {
+        if (page->ram_addr == ram_addr) {
+            return;
+        }
+    }
+    page = qemu_malloc(sizeof(HWPoisonPage));
+    page->ram_addr = ram_addr;
+    QLIST_INSERT_HEAD(&hwpoison_page_list, page, list);
+}
+
 static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap,
                                      int *max_banks)
 {
@@ -188,117 +220,129 @@ static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap,
     return -ENOSYS;
 }
 
-static int kvm_setup_mce(CPUState *env, uint64_t *mcg_cap)
+static void kvm_mce_inject(CPUState *env, target_phys_addr_t paddr, int code)
 {
-    return kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, mcg_cap);
-}
+    uint64_t status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN |
+                      MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S;
+    uint64_t mcg_status = MCG_STATUS_MCIP;
 
-static int kvm_set_mce(CPUState *env, struct kvm_x86_mce *m)
-{
-    return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, m);
-}
-
-static int kvm_get_msr(CPUState *env, struct kvm_msr_entry *msrs, int n)
-{
-    struct kvm_msrs *kmsrs = qemu_malloc(sizeof *kmsrs + n * sizeof *msrs);
-    int r;
-
-    kmsrs->nmsrs = n;
-    memcpy(kmsrs->entries, msrs, n * sizeof *msrs);
-    r = kvm_vcpu_ioctl(env, KVM_GET_MSRS, kmsrs);
-    memcpy(msrs, kmsrs->entries, n * sizeof *msrs);
-    free(kmsrs);
-    return r;
-}
-
-/* FIXME: kill this and kvm_get_msr, use env->mcg_status instead */
-static int kvm_mce_in_progress(CPUState *env)
-{
-    struct kvm_msr_entry msr_mcg_status = {
-        .index = MSR_MCG_STATUS,
-    };
-    int r;
-
-    r = kvm_get_msr(env, &msr_mcg_status, 1);
-    if (r == -1 || r == 0) {
-        fprintf(stderr, "Failed to get MCE status\n");
-        return 0;
+    if (code == BUS_MCEERR_AR) {
+        status |= MCI_STATUS_AR | 0x134;
+        mcg_status |= MCG_STATUS_EIPV;
+    } else {
+        status |= 0xc0;
+        mcg_status |= MCG_STATUS_RIPV;
     }
-    return !!(msr_mcg_status.data & MCG_STATUS_MCIP);
+    cpu_x86_inject_mce(NULL, env, 9, status, mcg_status, paddr,
+                       (MCM_ADDR_PHYS << 6) | 0xc,
+                       cpu_x86_support_mca_broadcast(env) ?
+                       MCE_INJECT_BROADCAST : 0);
+}
+#endif /* KVM_CAP_MCE */
+
+static void hardware_memory_error(void)
+{
+    fprintf(stderr, "Hardware memory error!\n");
+    exit(1);
 }
 
-struct kvm_x86_mce_data
-{
-    CPUState *env;
-    struct kvm_x86_mce *mce;
-    int abort_on_error;
-};
-
-static void kvm_do_inject_x86_mce(void *_data)
-{
-    struct kvm_x86_mce_data *data = _data;
-    int r;
-
-    /* If there is an MCE exception being processed, ignore this SRAO MCE */
-    if ((data->env->mcg_cap & MCG_SER_P) &&
-        !(data->mce->status & MCI_STATUS_AR)) {
-        if (kvm_mce_in_progress(data->env)) {
-            return;
-        }
-    }
-
-    r = kvm_set_mce(data->env, data->mce);
-    if (r < 0) {
-        perror("kvm_set_mce FAILED");
-        if (data->abort_on_error) {
-            abort();
-        }
-    }
-}
-
-static void kvm_inject_x86_mce_on(CPUState *env, struct kvm_x86_mce *mce,
-                                  int flag)
-{
-    struct kvm_x86_mce_data data = {
-        .env = env,
-        .mce = mce,
-        .abort_on_error = (flag & ABORT_ON_ERROR),
-    };
-
-    if (!env->mcg_cap) {
-        fprintf(stderr, "MCE support is not enabled!\n");
-        return;
-    }
-
-    run_on_cpu(env, kvm_do_inject_x86_mce, &data);
-}
-
-static void kvm_mce_broadcast_rest(CPUState *env);
-#endif
-
-void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
-                        uint64_t mcg_status, uint64_t addr, uint64_t misc,
-                        int flag)
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
 {
 #ifdef KVM_CAP_MCE
-    struct kvm_x86_mce mce = {
-        .bank = bank,
-        .status = status,
-        .mcg_status = mcg_status,
-        .addr = addr,
-        .misc = misc,
-    };
+    ram_addr_t ram_addr;
+    target_phys_addr_t paddr;
 
-    if (flag & MCE_BROADCAST) {
-        kvm_mce_broadcast_rest(cenv);
+    if ((env->mcg_cap & MCG_SER_P) && addr
+        && (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) {
+        if (qemu_ram_addr_from_host(addr, &ram_addr) ||
+            !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr,
+                                               &paddr)) {
+            fprintf(stderr, "Hardware memory error for memory used by "
+                    "QEMU itself instead of guest system!\n");
+            /* Hope we are lucky for AO MCE */
+            if (code == BUS_MCEERR_AO) {
+                return 0;
+            } else {
+                hardware_memory_error();
+            }
+        }
+        kvm_hwpoison_page_add(ram_addr);
+        kvm_mce_inject(env, paddr, code);
+    } else
+#endif /* KVM_CAP_MCE */
+    {
+        if (code == BUS_MCEERR_AO) {
+            return 0;
+        } else if (code == BUS_MCEERR_AR) {
+            hardware_memory_error();
+        } else {
+            return 1;
+        }
     }
+    return 0;
+}
 
-    kvm_inject_x86_mce_on(cenv, &mce, flag);
-#else
-    if (flag & ABORT_ON_ERROR) {
-        abort();
+int kvm_arch_on_sigbus(int code, void *addr)
+{
+#ifdef KVM_CAP_MCE
+    if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) {
+        ram_addr_t ram_addr;
+        target_phys_addr_t paddr;
+
+        /* Hope we are lucky for AO MCE */
+        if (qemu_ram_addr_from_host(addr, &ram_addr) ||
+            !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr,
+                                               &paddr)) {
+            fprintf(stderr, "Hardware memory error for memory used by "
+                    "QEMU itself instead of guest system!: %p\n", addr);
+            return 0;
+        }
+        kvm_hwpoison_page_add(ram_addr);
+        kvm_mce_inject(first_cpu, paddr, code);
+    } else
+#endif /* KVM_CAP_MCE */
+    {
+        if (code == BUS_MCEERR_AO) {
+            return 0;
+        } else if (code == BUS_MCEERR_AR) {
+            hardware_memory_error();
+        } else {
+            return 1;
+        }
     }
-#endif
+    return 0;
+}
+
+static int kvm_inject_mce_oldstyle(CPUState *env)
+{
+#ifdef KVM_CAP_MCE
+    if (!kvm_has_vcpu_events() && env->exception_injected == EXCP12_MCHK) {
+        unsigned int bank, bank_num = env->mcg_cap & 0xff;
+        struct kvm_x86_mce mce;
+
+        env->exception_injected = -1;
+
+        /*
+         * There must be at least one bank in use if an MCE is pending.
+         * Find it and use its values for the event injection.
+         */
+        for (bank = 0; bank < bank_num; bank++) {
+            if (env->mce_banks[bank * 4 + 1] & MCI_STATUS_VAL) {
+                break;
+            }
+        }
+        assert(bank < bank_num);
+
+        mce.bank = bank;
+        mce.status = env->mce_banks[bank * 4 + 1];
+        mce.mcg_status = env->mcg_status;
+        mce.addr = env->mce_banks[bank * 4 + 2];
+        mce.misc = env->mce_banks[bank * 4 + 3];
+
+        return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, &mce);
+    }
+#endif /* KVM_CAP_MCE */
+    return 0;
 }
 
 static void cpu_update_state(void *opaque, int running, int reason)
@@ -426,20 +470,26 @@ int kvm_arch_init_vcpu(CPUState *env)
         && kvm_check_extension(env->kvm_state, KVM_CAP_MCE) > 0) {
         uint64_t mcg_cap;
         int banks;
+        int ret;
 
-        if (kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks)) {
-            perror("kvm_get_mce_cap_supported FAILED");
-        } else {
-            if (banks > MCE_BANKS_DEF)
-                banks = MCE_BANKS_DEF;
-            mcg_cap &= MCE_CAP_DEF;
-            mcg_cap |= banks;
-            if (kvm_setup_mce(env, &mcg_cap)) {
-                perror("kvm_setup_mce FAILED");
-            } else {
-                env->mcg_cap = mcg_cap;
-            }
+        ret = kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks);
+        if (ret < 0) {
+            fprintf(stderr, "kvm_get_mce_cap_supported: %s", strerror(-ret));
+            return ret;
         }
+
+        if (banks > MCE_BANKS_DEF) {
+            banks = MCE_BANKS_DEF;
+        }
+        mcg_cap &= MCE_CAP_DEF;
+        mcg_cap |= banks;
+        ret = kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, &mcg_cap);
+        if (ret < 0) {
+            fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret));
+            return ret;
+        }
+
+        env->mcg_cap = mcg_cap;
     }
 #endif
 
@@ -556,6 +606,7 @@ int kvm_arch_init(KVMState *s)
         fprintf(stderr, "e820_add_entry() table is full\n");
         return ret;
     }
+    qemu_register_reset(kvm_unpoison_all, NULL);
 
     return 0;
 }
@@ -810,6 +861,7 @@ static int kvm_put_msrs(CPUState *env, int level)
     kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs);
     kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp);
     kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip);
+    kvm_msr_entry_set(&msrs[n++], MSR_PAT, env->pat);
     if (has_msr_star) {
         kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star);
     }
@@ -855,14 +907,10 @@ static int kvm_put_msrs(CPUState *env, int level)
     if (env->mcg_cap) {
         int i;
 
-        if (level == KVM_PUT_RESET_STATE) {
-            kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status);
-        } else if (level == KVM_PUT_FULL_STATE) {
-            kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status);
-            kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl);
-            for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) {
-                kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]);
-            }
+        kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status);
+        kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl);
+        for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) {
+            kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]);
         }
     }
 #endif
@@ -1066,6 +1114,7 @@ static int kvm_get_msrs(CPUState *env)
     msrs[n++].index = MSR_IA32_SYSENTER_CS;
     msrs[n++].index = MSR_IA32_SYSENTER_ESP;
     msrs[n++].index = MSR_IA32_SYSENTER_EIP;
+    msrs[n++].index = MSR_PAT;
     if (has_msr_star) {
         msrs[n++].index = MSR_STAR;
     }
@@ -1121,6 +1170,9 @@ static int kvm_get_msrs(CPUState *env)
         case MSR_IA32_SYSENTER_EIP:
             env->sysenter_eip = msrs[i].data;
             break;
+        case MSR_PAT:
+            env->pat = msrs[i].data;
+            break;
         case MSR_STAR:
             env->star = msrs[i].data;
             break;
@@ -1373,6 +1425,11 @@ int kvm_arch_put_registers(CPUState *env, int level)
     if (ret < 0) {
         return ret;
     }
+    /* must be before kvm_put_msrs */
+    ret = kvm_inject_mce_oldstyle(env);
+    if (ret < 0) {
+        return ret;
+    }
     ret = kvm_put_msrs(env, level);
     if (ret < 0) {
         return ret;
@@ -1509,13 +1566,38 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
     cpu_set_apic_base(env->apic_state, run->apic_base);
 }
 
-int kvm_arch_process_irqchip_events(CPUState *env)
+int kvm_arch_process_async_events(CPUState *env)
 {
+    if (env->interrupt_request & CPU_INTERRUPT_MCE) {
+        /* We must not raise CPU_INTERRUPT_MCE if it's not supported. */
+        assert(env->mcg_cap);
+
+        env->interrupt_request &= ~CPU_INTERRUPT_MCE;
+
+        kvm_cpu_synchronize_state(env);
+
+        if (env->exception_injected == EXCP08_DBLE) {
+            /* this means triple fault */
+            qemu_system_reset_request();
+            env->exit_request = 1;
+            return 0;
+        }
+        env->exception_injected = EXCP12_MCHK;
+        env->has_error_code = 0;
+
+        env->halted = 0;
+        if (kvm_irqchip_in_kernel() && env->mp_state == KVM_MP_STATE_HALTED) {
+            env->mp_state = KVM_MP_STATE_RUNNABLE;
+        }
+    }
+
     if (kvm_irqchip_in_kernel()) {
         return 0;
     }
 
-    if (env->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI)) {
+    if (((env->interrupt_request & CPU_INTERRUPT_HARD) &&
+         (env->eflags & IF_MASK)) ||
+        (env->interrupt_request & CPU_INTERRUPT_NMI)) {
         env->halted = 0;
     }
     if (env->interrupt_request & CPU_INTERRUPT_INIT) {
@@ -1536,64 +1618,10 @@ static int kvm_handle_halt(CPUState *env)
           (env->eflags & IF_MASK)) &&
         !(env->interrupt_request & CPU_INTERRUPT_NMI)) {
         env->halted = 1;
-        return 0;
+        return EXCP_HLT;
     }
 
-    return 1;
-}
-
-static bool host_supports_vmx(void)
-{
-    uint32_t ecx, unused;
-
-    host_cpuid(1, 0, &unused, &unused, &ecx, &unused);
-    return ecx & CPUID_EXT_VMX;
-}
-
-#define VMX_INVALID_GUEST_STATE 0x80000021
-
-int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
-{
-    uint64_t code;
-    int ret = 0;
-
-    switch (run->exit_reason) {
-    case KVM_EXIT_HLT:
-        DPRINTF("handle_hlt\n");
-        ret = kvm_handle_halt(env);
-        break;
-    case KVM_EXIT_SET_TPR:
-        ret = 1;
-        break;
-    case KVM_EXIT_FAIL_ENTRY:
-        code = run->fail_entry.hardware_entry_failure_reason;
-        fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n",
-                code);
-        if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) {
-            fprintf(stderr,
-                    "\nIf you're runnning a guest on an Intel machine without "
-                        "unrestricted mode\n"
-                    "support, the failure can be most likely due to the guest "
-                        "entering an invalid\n"
-                    "state for Intel VT. For example, the guest maybe running "
-                        "in big real mode\n"
-                    "which is not supported on less recent Intel processors."
-                        "\n\n");
-        }
-        ret = -1;
-        break;
-    case KVM_EXIT_EXCEPTION:
-        fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n",
-                run->ex.exception, run->ex.error_code);
-        ret = -1;
-        break;
-    default:
-        fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
-        ret = -1;
-        break;
-    }
-
-    return ret;
+    return 0;
 }
 
 #ifdef KVM_CAP_SET_GUEST_DEBUG
@@ -1703,31 +1731,31 @@ void kvm_arch_remove_all_hw_breakpoints(void)
 
 static CPUWatchpoint hw_watchpoint;
 
-int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info)
+static int kvm_handle_debug(struct kvm_debug_exit_arch *arch_info)
 {
-    int handle = 0;
+    int ret = 0;
     int n;
 
     if (arch_info->exception == 1) {
         if (arch_info->dr6 & (1 << 14)) {
             if (cpu_single_env->singlestep_enabled) {
-                handle = 1;
+                ret = EXCP_DEBUG;
             }
         } else {
             for (n = 0; n < 4; n++) {
                 if (arch_info->dr6 & (1 << n)) {
                     switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) {
                     case 0x0:
-                        handle = 1;
+                        ret = EXCP_DEBUG;
                         break;
                     case 0x1:
-                        handle = 1;
+                        ret = EXCP_DEBUG;
                         cpu_single_env->watchpoint_hit = &hw_watchpoint;
                         hw_watchpoint.vaddr = hw_breakpoint[n].addr;
                         hw_watchpoint.flags = BP_MEM_WRITE;
                         break;
                     case 0x3:
-                        handle = 1;
+                        ret = EXCP_DEBUG;
                         cpu_single_env->watchpoint_hit = &hw_watchpoint;
                         hw_watchpoint.vaddr = hw_breakpoint[n].addr;
                         hw_watchpoint.flags = BP_MEM_ACCESS;
@@ -1737,17 +1765,18 @@ int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info)
             }
         }
     } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) {
-        handle = 1;
+        ret = EXCP_DEBUG;
     }
-    if (!handle) {
+    if (ret == 0) {
         cpu_synchronize_state(cpu_single_env);
         assert(cpu_single_env->exception_injected == -1);
 
+        /* pass to guest */
         cpu_single_env->exception_injected = arch_info->exception;
         cpu_single_env->has_error_code = 0;
     }
 
-    return handle;
+    return ret;
 }
 
 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg)
@@ -1778,178 +1807,68 @@ void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg)
 }
 #endif /* KVM_CAP_SET_GUEST_DEBUG */
 
+static bool host_supports_vmx(void)
+{
+    uint32_t ecx, unused;
+
+    host_cpuid(1, 0, &unused, &unused, &ecx, &unused);
+    return ecx & CPUID_EXT_VMX;
+}
+
+#define VMX_INVALID_GUEST_STATE 0x80000021
+
+int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
+{
+    uint64_t code;
+    int ret;
+
+    switch (run->exit_reason) {
+    case KVM_EXIT_HLT:
+        DPRINTF("handle_hlt\n");
+        ret = kvm_handle_halt(env);
+        break;
+    case KVM_EXIT_SET_TPR:
+        ret = 0;
+        break;
+    case KVM_EXIT_FAIL_ENTRY:
+        code = run->fail_entry.hardware_entry_failure_reason;
+        fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n",
+                code);
+        if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) {
+            fprintf(stderr,
+                    "\nIf you're runnning a guest on an Intel machine without "
+                        "unrestricted mode\n"
+                    "support, the failure can be most likely due to the guest "
+                        "entering an invalid\n"
+                    "state for Intel VT. For example, the guest maybe running "
+                        "in big real mode\n"
+                    "which is not supported on less recent Intel processors."
+                        "\n\n");
+        }
+        ret = -1;
+        break;
+    case KVM_EXIT_EXCEPTION:
+        fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n",
+                run->ex.exception, run->ex.error_code);
+        ret = -1;
+        break;
+#ifdef KVM_CAP_SET_GUEST_DEBUG
+    case KVM_EXIT_DEBUG:
+        DPRINTF("kvm_exit_debug\n");
+        ret = kvm_handle_debug(&run->debug.arch);
+        break;
+#endif /* KVM_CAP_SET_GUEST_DEBUG */
+    default:
+        fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
+        ret = -1;
+        break;
+    }
+
+    return ret;
+}
+
 bool kvm_arch_stop_on_emulation_error(CPUState *env)
 {
     return !(env->cr[0] & CR0_PE_MASK) ||
            ((env->segs[R_CS].selector  & 3) != 3);
 }
-
-static void hardware_memory_error(void)
-{
-    fprintf(stderr, "Hardware memory error!\n");
-    exit(1);
-}
-
-#ifdef KVM_CAP_MCE
-static void kvm_mce_broadcast_rest(CPUState *env)
-{
-    struct kvm_x86_mce mce = {
-        .bank = 1,
-        .status = MCI_STATUS_VAL | MCI_STATUS_UC,
-        .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV,
-        .addr = 0,
-        .misc = 0,
-    };
-    CPUState *cenv;
-
-    /* Broadcast MCA signal for processor version 06H_EH and above */
-    if (cpu_x86_support_mca_broadcast(env)) {
-        for (cenv = first_cpu; cenv != NULL; cenv = cenv->next_cpu) {
-            if (cenv == env) {
-                continue;
-            }
-            kvm_inject_x86_mce_on(cenv, &mce, ABORT_ON_ERROR);
-        }
-    }
-}
-
-static void kvm_mce_inj_srar_dataload(CPUState *env, target_phys_addr_t paddr)
-{
-    struct kvm_x86_mce mce = {
-        .bank = 9,
-        .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN
-                  | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S
-                  | MCI_STATUS_AR | 0x134,
-        .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_EIPV,
-        .addr = paddr,
-        .misc = (MCM_ADDR_PHYS << 6) | 0xc,
-    };
-    int r;
-
-    r = kvm_set_mce(env, &mce);
-    if (r < 0) {
-        fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno));
-        abort();
-    }
-    kvm_mce_broadcast_rest(env);
-}
-
-static void kvm_mce_inj_srao_memscrub(CPUState *env, target_phys_addr_t paddr)
-{
-    struct kvm_x86_mce mce = {
-        .bank = 9,
-        .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN
-                  | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S
-                  | 0xc0,
-        .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV,
-        .addr = paddr,
-        .misc = (MCM_ADDR_PHYS << 6) | 0xc,
-    };
-    int r;
-
-    r = kvm_set_mce(env, &mce);
-    if (r < 0) {
-        fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno));
-        abort();
-    }
-    kvm_mce_broadcast_rest(env);
-}
-
-static void kvm_mce_inj_srao_memscrub2(CPUState *env, target_phys_addr_t paddr)
-{
-    struct kvm_x86_mce mce = {
-        .bank = 9,
-        .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN
-                  | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S
-                  | 0xc0,
-        .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV,
-        .addr = paddr,
-        .misc = (MCM_ADDR_PHYS << 6) | 0xc,
-    };
-
-    kvm_inject_x86_mce_on(env, &mce, ABORT_ON_ERROR);
-    kvm_mce_broadcast_rest(env);
-}
-
-#endif
-
-int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
-{
-#if defined(KVM_CAP_MCE)
-    void *vaddr;
-    ram_addr_t ram_addr;
-    target_phys_addr_t paddr;
-
-    if ((env->mcg_cap & MCG_SER_P) && addr
-        && (code == BUS_MCEERR_AR
-            || code == BUS_MCEERR_AO)) {
-        vaddr = (void *)addr;
-        if (qemu_ram_addr_from_host(vaddr, &ram_addr) ||
-            !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr, &paddr)) {
-            fprintf(stderr, "Hardware memory error for memory used by "
-                    "QEMU itself instead of guest system!\n");
-            /* Hope we are lucky for AO MCE */
-            if (code == BUS_MCEERR_AO) {
-                return 0;
-            } else {
-                hardware_memory_error();
-            }
-        }
-
-        if (code == BUS_MCEERR_AR) {
-            /* Fake an Intel architectural Data Load SRAR UCR */
-            kvm_mce_inj_srar_dataload(env, paddr);
-        } else {
-            /*
-             * If there is an MCE excpetion being processed, ignore
-             * this SRAO MCE
-             */
-            if (!kvm_mce_in_progress(env)) {
-                /* Fake an Intel architectural Memory scrubbing UCR */
-                kvm_mce_inj_srao_memscrub(env, paddr);
-            }
-        }
-    } else
-#endif
-    {
-        if (code == BUS_MCEERR_AO) {
-            return 0;
-        } else if (code == BUS_MCEERR_AR) {
-            hardware_memory_error();
-        } else {
-            return 1;
-        }
-    }
-    return 0;
-}
-
-int kvm_arch_on_sigbus(int code, void *addr)
-{
-#if defined(KVM_CAP_MCE)
-    if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) {
-        void *vaddr;
-        ram_addr_t ram_addr;
-        target_phys_addr_t paddr;
-
-        /* Hope we are lucky for AO MCE */
-        vaddr = addr;
-        if (qemu_ram_addr_from_host(vaddr, &ram_addr) ||
-            !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr, &paddr)) {
-            fprintf(stderr, "Hardware memory error for memory used by "
-                    "QEMU itself instead of guest system!: %p\n", addr);
-            return 0;
-        }
-        kvm_mce_inj_srao_memscrub2(first_cpu, paddr);
-    } else
-#endif
-    {
-        if (code == BUS_MCEERR_AO) {
-            return 0;
-        } else if (code == BUS_MCEERR_AR) {
-            hardware_memory_error();
-        } else {
-            return 1;
-        }
-    }
-    return 0;
-}
diff --git a/target-i386/kvm_x86.h b/target-i386/kvm_x86.h
deleted file mode 100644
index 9d7b584267..0000000000
--- a/target-i386/kvm_x86.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * QEMU KVM support
- *
- * Copyright (C) 2009 Red Hat Inc.
- * Copyright IBM, Corp. 2008
- *
- * Authors:
- *  Anthony Liguori   <aliguori@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-
-#ifndef __KVM_X86_H__
-#define __KVM_X86_H__
-
-#define ABORT_ON_ERROR  0x01
-#define MCE_BROADCAST   0x02
-
-void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
-                        uint64_t mcg_status, uint64_t addr, uint64_t misc,
-                        int flag);
-
-#endif
diff --git a/target-i386/machine.c b/target-i386/machine.c
index d78eceb779..6384f54b95 100644
--- a/target-i386/machine.c
+++ b/target-i386/machine.c
@@ -491,6 +491,8 @@ static const VMStateDescription vmstate_cpu = {
         VMSTATE_UINT64_V(xcr0, CPUState, 12),
         VMSTATE_UINT64_V(xstate_bv, CPUState, 12),
         VMSTATE_YMMH_REGS_VARS(ymmh_regs, CPUState, CPU_NB_REGS, 12),
+
+        VMSTATE_UINT64_V(pat, CPUState, 13),
         VMSTATE_END_OF_LIST()
         /* The above list is not sorted /wrt version numbers, watch out! */
     },
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 31345907d5..0e2e67b34d 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -222,7 +222,7 @@ int kvmppc_set_interrupt(CPUState *env, int irq, int level)
 #define PPC_INPUT_INT PPC6xx_INPUT_INT
 #endif
 
-int kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
+void kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
 {
     int r;
     unsigned irq;
@@ -253,15 +253,15 @@ int kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
     /* We don't know if there are more interrupts pending after this. However,
      * the guest will return to userspace in the course of handling this one
      * anyways, so we will get a chance to deliver the rest. */
-    return 0;
 }
 
 void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
 {
 }
 
-void kvm_arch_process_irqchip_events(CPUState *env)
+int kvm_arch_process_async_events(CPUState *env)
 {
+    return 0;
 }
 
 static int kvmppc_handle_halt(CPUState *env)
@@ -271,7 +271,7 @@ static int kvmppc_handle_halt(CPUState *env)
         env->exception_index = EXCP_HLT;
     }
 
-    return 1;
+    return 0;
 }
 
 /* map dcr access to existing qemu dcr emulation */
@@ -280,7 +280,7 @@ static int kvmppc_handle_dcr_read(CPUState *env, uint32_t dcrn, uint32_t *data)
     if (ppc_dcr_read(env->dcr_env, dcrn, data) < 0)
         fprintf(stderr, "Read to unhandled DCR (0x%x)\n", dcrn);
 
-    return 1;
+    return 0;
 }
 
 static int kvmppc_handle_dcr_write(CPUState *env, uint32_t dcrn, uint32_t data)
@@ -288,12 +288,12 @@ static int kvmppc_handle_dcr_write(CPUState *env, uint32_t dcrn, uint32_t data)
     if (ppc_dcr_write(env->dcr_env, dcrn, data) < 0)
         fprintf(stderr, "Write to unhandled DCR (0x%x)\n", dcrn);
 
-    return 1;
+    return 0;
 }
 
 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
 {
-    int ret = 0;
+    int ret;
 
     switch (run->exit_reason) {
     case KVM_EXIT_DCR:
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 6e9427431d..91232038ea 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -177,7 +177,7 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
 {
 }
 
-int kvm_arch_process_irqchip_events(CPUState *env)
+int kvm_arch_process_async_events(CPUState *env)
 {
     return 0;
 }
@@ -497,6 +497,11 @@ int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
             break;
     }
 
+    if (ret == 0) {
+        ret = EXCP_INTERRUPT;
+    } else if (ret > 0) {
+        ret = 0;
+    }
     return ret;
 }
 
diff --git a/vl.c b/vl.c
index 48150cf0ce..ac4721110c 100644
--- a/vl.c
+++ b/vl.c
@@ -1450,6 +1450,7 @@ static void main_loop(void)
         }
         if (qemu_reset_requested()) {
             pause_all_vcpus();
+            cpu_synchronize_all_states();
             qemu_system_reset();
             resume_all_vcpus();
         }