[v6,33/60] i386/cpu: introduce x86_confidenetial_guest_cpu_realizefn()

Commit Message

Xiaoyao Li Nov. 5, 2024, 6:23 a.m. UTC

To execute confidential guest specific cpu realize operations.

Signed-off-by: Xiaoyao Li <[e-mail]>
---
changes in v6:
 - new patch;
---
 target/i386/confidential-guest.h | 12 ++++++++++++
 target/i386/cpu.c                | 13 ++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

Patch

diff --git a/target/i386/confidential-guest.h b/target/i386/confidential-guest.h
index 38169ed68e06..4b7ea91023dc 100644
--- a/target/i386/confidential-guest.h
+++ b/target/i386/confidential-guest.h
@@ -40,6 +40,7 @@  struct X86ConfidentialGuestClass {
     /* <public> */
     int (*kvm_type)(X86ConfidentialGuest *cg);
     void (*cpu_instance_init)(X86ConfidentialGuest *cg, CPUState *cpu);
+    void (*cpu_realizefn)(X86ConfidentialGuest *cg, CPUState *cpu, Error **errp);
     uint32_t (*mask_cpuid_features)(X86ConfidentialGuest *cg, uint32_t feature, uint32_t index,
                                     int reg, uint32_t value);
 };
@@ -70,6 +71,17 @@  static inline void x86_confidential_guest_cpu_instance_init(X86ConfidentialGuest
     }
 }
 
+static inline void x86_confidenetial_guest_cpu_realizefn(X86ConfidentialGuest *cg,
+                                                         CPUState *cpu,
+                                                         Error **errp)
+{
+    X86ConfidentialGuestClass *klass = X86_CONFIDENTIAL_GUEST_GET_CLASS(cg);
+
+    if (klass->cpu_realizefn) {
+        klass->cpu_realizefn(cg, cpu, errp);
+    }
+}
+
 /**
  * x86_confidential_guest_mask_cpuid_features:
  *
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index c7d65bbeab9b..1ffbafef03e7 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -7848,6 +7848,18 @@  static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
         return;
     }
 
+#ifndef CONFIG_USER_ONLY
+    MachineState *ms = MACHINE(qdev_get_machine());
+
+    if (ms->cgs) {
+        x86_confidenetial_guest_cpu_realizefn(X86_CONFIDENTIAL_GUEST(ms->cgs),
+                                              cs, &local_err);
+        if (local_err != NULL) {
+            goto out;
+        }
+    }
+#endif
+
     if (xcc->host_cpuid_required && !accel_uses_host_cpuid()) {
         g_autofree char *name = x86_cpu_class_get_model_name(xcc);
         error_setg(&local_err, "CPU model '%s' requires KVM or HVF", name);
@@ -7972,7 +7984,6 @@  static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
     }
 
 #ifndef CONFIG_USER_ONLY
-    MachineState *ms = MACHINE(qdev_get_machine());
     qemu_register_reset(x86_cpu_machine_reset_cb, cpu);
 
     if (cpu->env.features[FEAT_1_EDX] & CPUID_APIC || ms->smp.cpus > 1) {