[Qemu-devel] [PATCH 03/10] cpu: init vmstate for ticks and clock offset

[Paolo Bonzini <pbonzini@redhat.com>]

From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>

Ticks and clock offset used by CPU timers have to be saved in vmstate.
But vmstate for these fields registered only in icount mode.
Missing registration leads to breaking the continuity when vmstate is loaded.
This patch introduces new initialization function which fixes this.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 cpus.c                | 8 ++++++--
 include/qemu-common.h | 2 ++
 vl.c                  | 1 +
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/cpus.c b/cpus.c
index 0f7d0ea..2a0e133 100644
--- a/cpus.c
+++ b/cpus.c
@@ -493,13 +493,17 @@ static const VMStateDescription vmstate_timers = {
     }
 };
 
+void cpu_ticks_init(void)
+{
+    seqlock_init(&timers_state.vm_clock_seqlock, NULL);
+    vmstate_register(NULL, 0, &vmstate_timers, &timers_state);
+}
+
 void configure_icount(QemuOpts *opts, Error **errp)
 {
     const char *option;
     char *rem_str = NULL;
 
-    seqlock_init(&timers_state.vm_clock_seqlock, NULL);
-    vmstate_register(NULL, 0, &vmstate_timers, &timers_state);
     option = qemu_opt_get(opts, "shift");
     if (!option) {
         if (qemu_opt_get(opts, "align") != NULL) {
diff --git a/include/qemu-common.h b/include/qemu-common.h
index bcf7a6a..dcb57ab 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -105,6 +105,8 @@ static inline char *realpath(const char *path, char *resolved_path)
 }
 #endif
 
+void cpu_ticks_init(void);
+
 /* icount */
 void configure_icount(QemuOpts *opts, Error **errp);
 extern int use_icount;
diff --git a/vl.c b/vl.c
index 15aea95..5db0d08 100644
--- a/vl.c
+++ b/vl.c
@@ -4334,6 +4334,7 @@ int main(int argc, char **argv, char **envp)
     qemu_spice_init();
 #endif
 
+    cpu_ticks_init();
     if (icount_opts) {
         if (kvm_enabled() || xen_enabled()) {
             fprintf(stderr, "-icount is not allowed with kvm or xen\n");
-- 
2.1.0