This patch removes "static" specifier from several qemu function to make
them visible to the replay module. It also invents several system functions
that will be used by replay.
Signed-off-by: Pavel Dovgalyuk <pavel.dovga...@ispras.ru>
---
cpus.c | 4 ++--
include/exec/exec-all.h | 1 +
include/qom/cpu.h | 10 ++++++++++
include/sysemu/cpus.h | 1 +
include/sysemu/sysemu.h | 1 +
savevm.c | 25 ++++++++++++++++++++-----
translate-all.c | 8 ++++++++
7 files changed, 43 insertions(+), 7 deletions(-)
diff --git a/cpus.c b/cpus.c
index 0c33458..e53d605 100644
--- a/cpus.c
+++ b/cpus.c
@@ -88,7 +88,7 @@ static bool cpu_thread_is_idle(CPUState *cpu)
return true;
}
-static bool all_cpu_threads_idle(void)
+bool all_cpu_threads_idle(void)
{
CPUState *cpu;
@@ -1112,7 +1112,7 @@ bool qemu_cpu_is_self(CPUState *cpu)
return qemu_thread_is_self(cpu->thread);
}
-static bool qemu_in_vcpu_thread(void)
+bool qemu_in_vcpu_thread(void)
{
return current_cpu && qemu_cpu_is_self(current_cpu);
}
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index ab956f2..1d17f75 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -212,6 +212,7 @@ static inline unsigned int tb_phys_hash_func(tb_page_addr_t
pc)
void tb_free(TranslationBlock *tb);
void tb_flush(CPUArchState *env);
+void tb_flush_all(void);
void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr);
#if defined(USE_DIRECT_JUMP)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 2098f1c..5afb44c 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -480,6 +480,16 @@ static inline bool cpu_has_work(CPUState *cpu)
bool qemu_cpu_is_self(CPUState *cpu);
/**
+ * qemu_in_vcpu_thread:
+ *
+ * Checks whether the caller is executing on the vCPU thread
+ * of the current vCPU.
+ *
+ * Returns: %true if called from vCPU's thread, %false otherwise.
+ */
+bool qemu_in_vcpu_thread(void);
+
+/**
* qemu_cpu_kick:
* @cpu: The vCPU to kick.
*
diff --git a/include/sysemu/cpus.h b/include/sysemu/cpus.h
index 3f162a9..86ae556 100644
--- a/include/sysemu/cpus.h
+++ b/include/sysemu/cpus.h
@@ -6,6 +6,7 @@ void qemu_init_cpu_loop(void);
void resume_all_vcpus(void);
void pause_all_vcpus(void);
void cpu_stop_current(void);
+bool all_cpu_threads_idle(void);
void cpu_synchronize_all_states(void);
void cpu_synchronize_all_post_reset(void);
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 0037a69..72bc093 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -76,6 +76,7 @@ void qemu_add_machine_init_done_notifier(Notifier *notify);
void do_savevm(Monitor *mon, const QDict *qdict);
int load_vmstate(const char *name);
+int save_vmstate(Monitor *mon, const char *name);
void do_delvm(Monitor *mon, const QDict *qdict);
void do_info_snapshots(Monitor *mon, const QDict *qdict);
diff --git a/savevm.c b/savevm.c
index 2d8eb96..b4fe8d3 100644
--- a/savevm.c
+++ b/savevm.c
@@ -42,7 +42,7 @@
#include "qemu/iov.h"
#include "block/snapshot.h"
#include "block/qapi.h"
-
+#include "replay/replay.h"
#ifndef ETH_P_RARP
#define ETH_P_RARP 0x8035
@@ -1039,7 +1039,7 @@ static int del_existing_snapshots(Monitor *mon, const
char *name)
return 0;
}
-void do_savevm(Monitor *mon, const QDict *qdict)
+int save_vmstate(Monitor *mon, const char *name)
{
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1;
@@ -1049,7 +1049,7 @@ void do_savevm(Monitor *mon, const QDict *qdict)
uint64_t vm_state_size;
qemu_timeval tv;
struct tm tm;
- const char *name = qdict_get_try_str(qdict, "name");
+ int success = 0;
/* Verify if there is a device that doesn't support snapshots and is
writable */
bs = NULL;
@@ -1062,14 +1062,19 @@ void do_savevm(Monitor *mon, const QDict *qdict)
if (!bdrv_can_snapshot(bs)) {
monitor_printf(mon, "Device '%s' is writable but does not support
snapshots.\n",
bdrv_get_device_name(bs));
- return;
+ return success;
}
}
bs = find_vmstate_bs();
if (!bs) {
monitor_printf(mon, "No block device can accept snapshots\n");
- return;
+ if (replay_mode != REPLAY_MODE_NONE) {
+ fprintf(stderr,
+ "At least one hdd should be attached to QEMU for
replay\n");
+ exit(1);
+ }
+ return success;
}
saved_vm_running = runstate_is_running();
@@ -1118,6 +1123,7 @@ void do_savevm(Monitor *mon, const QDict *qdict)
/* create the snapshots */
+ success = 1;
bs1 = NULL;
while ((bs1 = bdrv_next(bs1))) {
if (bdrv_can_snapshot(bs1)) {
@@ -1127,6 +1133,7 @@ void do_savevm(Monitor *mon, const QDict *qdict)
if (ret < 0) {
monitor_printf(mon, "Error while creating snapshot on '%s'\n",
bdrv_get_device_name(bs1));
+ success = 0;
}
}
}
@@ -1135,6 +1142,14 @@ void do_savevm(Monitor *mon, const QDict *qdict)
if (saved_vm_running) {
vm_start();
}
+
+ return success;
+}
+
+void do_savevm(Monitor *mon, const QDict *qdict)
+{
+ const char *name = qdict_get_try_str(qdict, "name");
+ save_vmstate(mon, name);
}
void qmp_xen_save_devices_state(const char *filename, Error **errp)
diff --git a/translate-all.c b/translate-all.c
index ba5c840..7177b71 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -806,6 +806,14 @@ void tb_flush(CPUArchState *env1)
tcg_ctx.tb_ctx.tb_flush_count++;
}
+void tb_flush_all(void)
+{
+ CPUState *cpu;
+ for (cpu = first_cpu ; cpu != NULL ; cpu = CPU_NEXT(cpu)) {
+ tb_flush(cpu->env_ptr);
+ }
+}
+
#ifdef DEBUG_TB_CHECK
static void tb_invalidate_check(target_ulong address)
