accel/kvm: Factor kvm_cpu_synchronize_put() out

The same code is duplicated 3 times: factor a common method.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Link: https://lore.kernel.org/r/20251008040715.81513-4-philmd@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 58802f7c3cc15fe29dd763240a26b8cef070c6f9..56031925c4e9e6d46fb0e026e7b8dede2dabc7d2 100644 (file)
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -2937,22 +2937,32 @@ void kvm_cpu_synchronize_state(CPUState *cpu)
     }
 }
 
-static void do_kvm_cpu_synchronize_post_reset(CPUState *cpu, run_on_cpu_data arg)
+static bool kvm_cpu_synchronize_put(CPUState *cpu, KvmPutState state,
+                                    const char *desc)
 {
     Error *err = NULL;
-    int ret = kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE, &err);
+    int ret = kvm_arch_put_registers(cpu, state, &err);
     if (ret) {
         if (err) {
-            error_reportf_err(err, "Restoring resisters after reset: ");
+            error_reportf_err(err, "Restoring resisters %s: ", desc);
         } else {
-            error_report("Failed to put registers after reset: %s",
+            error_report("Failed to put registers %s: %s", desc,
                          strerror(-ret));
         }
-        cpu_dump_state(cpu, stderr, CPU_DUMP_CODE);
-        vm_stop(RUN_STATE_INTERNAL_ERROR);
+        return false;
     }
 
     cpu->vcpu_dirty = false;
+
+    return true;
+}
+
+static void do_kvm_cpu_synchronize_post_reset(CPUState *cpu, run_on_cpu_data arg)
+{
+    if (!kvm_cpu_synchronize_put(cpu, KVM_PUT_RESET_STATE, "after reset")) {
+        cpu_dump_state(cpu, stderr, CPU_DUMP_CODE);
+        vm_stop(RUN_STATE_INTERNAL_ERROR);
+    }
 }
 
 void kvm_cpu_synchronize_post_reset(CPUState *cpu)
@@ -2966,19 +2976,9 @@ void kvm_cpu_synchronize_post_reset(CPUState *cpu)
 
 static void do_kvm_cpu_synchronize_post_init(CPUState *cpu, run_on_cpu_data arg)
 {
-    Error *err = NULL;
-    int ret = kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE, &err);
-    if (ret) {
-        if (err) {
-            error_reportf_err(err, "Putting registers after init: ");
-        } else {
-            error_report("Failed to put registers after init: %s",
-                         strerror(-ret));
-        }
+    if (!kvm_cpu_synchronize_put(cpu, KVM_PUT_FULL_STATE, "after init")) {
         exit(1);
     }
-
-    cpu->vcpu_dirty = false;
 }
 
 void kvm_cpu_synchronize_post_init(CPUState *cpu)
@@ -3168,20 +3168,11 @@ int kvm_cpu_exec(CPUState *cpu)
         MemTxAttrs attrs;
 
         if (cpu->vcpu_dirty) {
-            Error *err = NULL;
-            ret = kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE, &err);
-            if (ret) {
-                if (err) {
-                    error_reportf_err(err, "Putting registers after init: ");
-                } else {
-                    error_report("Failed to put registers after init: %s",
-                                 strerror(-ret));
-                }
+            if (!kvm_cpu_synchronize_put(cpu, KVM_PUT_RUNTIME_STATE,
+                                         "at runtime")) {
                 ret = -1;
                 break;
             }
-
-            cpu->vcpu_dirty = false;
         }
 
         kvm_arch_pre_run(cpu, run);