[Qemu-stable] [PATCH 05/88] Introduce cpu_clean_all_dirty

[Michael Roth]

From: Marcelo Tosatti <address@hidden>

Introduce cpu_clean_all_dirty, to force subsequent cpu_synchronize_all_states
to read in-kernel register state.

Cc: address@hidden
Signed-off-by: Marcelo Tosatti <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
(cherry picked from commit de9d61e83d43be9069e6646fa9d57a3f47779d28)
Conflicts:
        kvm-all.c

*removed context dependency on kvm_cpu_synchronize_post_init

Signed-off-by: Michael Roth <address@hidden>
---
 cpus.c                | 9 +++++++++
 include/sysemu/cpus.h | 1 +
 include/sysemu/kvm.h  | 8 ++++++++
 kvm-all.c             | 5 +++++
 4 files changed, 23 insertions(+)

diff --git a/cpus.c b/cpus.c
index 5e7f2cf..492defe 100644
--- a/cpus.c
+++ b/cpus.c
@@ -523,6 +523,15 @@ void cpu_synchronize_all_post_init(void)
     }
 }
 
+void cpu_clean_all_dirty(void)
+{
+    CPUState *cpu;
+
+    CPU_FOREACH(cpu) {
+        cpu_clean_state(cpu);
+    }
+}
+
 static int do_vm_stop(RunState state)
 {
     int ret = 0;
diff --git a/include/sysemu/cpus.h b/include/sysemu/cpus.h
index 4f79081..3f162a9 100644
--- a/include/sysemu/cpus.h
+++ b/include/sysemu/cpus.h
@@ -10,6 +10,7 @@ void cpu_stop_current(void);
 void cpu_synchronize_all_states(void);
 void cpu_synchronize_all_post_reset(void);
 void cpu_synchronize_all_post_init(void);
+void cpu_clean_all_dirty(void);
 
 void qtest_clock_warp(int64_t dest);
 
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 174ea36..777dc66 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -348,6 +348,7 @@ int kvm_physical_memory_addr_from_host(KVMState *s, void 
*ram_addr,
 void kvm_cpu_synchronize_state(CPUState *cpu);
 void kvm_cpu_synchronize_post_reset(CPUState *cpu);
 void kvm_cpu_synchronize_post_init(CPUState *cpu);
+void kvm_cpu_clean_state(CPUState *cpu);
 
 /* generic hooks - to be moved/refactored once there are more users */
 
@@ -372,6 +373,13 @@ static inline void cpu_synchronize_post_init(CPUState *cpu)
     }
 }
 
+static inline void cpu_clean_state(CPUState *cpu)
+{
+    if (kvm_enabled()) {
+        kvm_cpu_clean_state(cpu);
+    }
+}
+
 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg);
 void kvm_irqchip_release_virq(KVMState *s, int virq);
diff --git a/kvm-all.c b/kvm-all.c
index 1402f4f..40f6b55 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1681,6 +1681,11 @@ void kvm_cpu_synchronize_post_init(CPUState *cpu)
     cpu->kvm_vcpu_dirty = false;
 }
 
+void kvm_cpu_clean_state(CPUState *cpu)
+{
+    cpu->kvm_vcpu_dirty = false;
+}
+
 int kvm_cpu_exec(CPUState *cpu)
 {
     struct kvm_run *run = cpu->kvm_run;
-- 
1.9.1