viridian: add missing context save helpers into synic and time modules

Currently the time module lacks vcpu context save helpers and the synic
module lacks domain context save helpers. These helpers are not yet
required but subsequent patches will require at least some of them so this
patch completes the set to avoid introducing them in an ad-hoc way.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>

xen/arch/x86/hvm/viridian/private.h

@@ -85,6 +85,11 @@ void viridian_synic_save_vcpu_ctxt(const struct vcpu *v,
 void viridian_synic_load_vcpu_ctxt(
     struct vcpu *v, const struct hvm_viridian_vcpu_context *ctxt);
 
+void viridian_synic_save_domain_ctxt(
+    const struct domain *d, struct hvm_viridian_domain_context *ctxt);
+void viridian_synic_load_domain_ctxt(
+    struct domain *d, const struct hvm_viridian_domain_context *ctxt);
+
 int viridian_time_wrmsr(struct vcpu *v, uint32_t idx, uint64_t val);
 int viridian_time_rdmsr(const struct vcpu *v, uint32_t idx, uint64_t *val);
 
@@ -94,6 +99,11 @@ int viridian_time_domain_init(const struct domain *d);
 void viridian_time_vcpu_deinit(const struct vcpu *v);
 void viridian_time_domain_deinit(const struct domain *d);
 
+void viridian_time_save_vcpu_ctxt(
+    const struct vcpu *v, struct hvm_viridian_vcpu_context *ctxt);
+void viridian_time_load_vcpu_ctxt(
+    struct vcpu *v, const struct hvm_viridian_vcpu_context *ctxt);
+
 void viridian_time_save_domain_ctxt(
     const struct domain *d, struct hvm_viridian_domain_context *ctxt);
 void viridian_time_load_domain_ctxt(

xen/arch/x86/hvm/viridian/synic.c

@@ -186,6 +186,16 @@ void viridian_synic_load_vcpu_ctxt(
     vv->apic_assist_pending = ctxt->apic_assist_pending;
 }
 
+void viridian_synic_save_domain_ctxt(
+    const struct domain *d, struct hvm_viridian_domain_context *ctxt)
+{
+}
+
+void viridian_synic_load_domain_ctxt(
+    struct domain *d, const struct hvm_viridian_domain_context *ctxt)
+{
+}
+
 /*
  * Local variables:
  * mode: C

xen/arch/x86/hvm/viridian/time.c

@@ -233,6 +233,16 @@ void viridian_time_domain_deinit(const struct domain *d)
 {
 }
 
+void viridian_time_save_vcpu_ctxt(
+    const struct vcpu *v, struct hvm_viridian_vcpu_context *ctxt)
+{
+}
+
+void viridian_time_load_vcpu_ctxt(
+    struct vcpu *v, const struct hvm_viridian_vcpu_context *ctxt)
+{
+}
+
 void viridian_time_save_domain_ctxt(
     const struct domain *d, struct hvm_viridian_domain_context *ctxt)
 {

xen/arch/x86/hvm/viridian/viridian.c

@@ -707,6 +707,7 @@ static int viridian_save_domain_ctxt(struct vcpu *v,
         return 0;
 
     viridian_time_save_domain_ctxt(d, &ctxt);
+    viridian_synic_save_domain_ctxt(d, &ctxt);
 
     return (hvm_save_entry(VIRIDIAN_DOMAIN, 0, h, &ctxt) != 0);
 }
@@ -723,6 +724,7 @@ static int viridian_load_domain_ctxt(struct domain *d,
     vd->hypercall_gpa.raw = ctxt.hypercall_gpa;
     vd->guest_os_id.raw = ctxt.guest_os_id;
 
+    viridian_synic_load_domain_ctxt(d, &ctxt);
     viridian_time_load_domain_ctxt(d, &ctxt);
 
     return 0;
@@ -738,6 +740,7 @@ static int viridian_save_vcpu_ctxt(struct vcpu *v, hvm_domain_context_t *h)
     if ( !is_viridian_vcpu(v) )
         return 0;
 
+    viridian_time_save_vcpu_ctxt(v, &ctxt);
     viridian_synic_save_vcpu_ctxt(v, &ctxt);
 
     return hvm_save_entry(VIRIDIAN_VCPU, v->vcpu_id, h, &ctxt);
@@ -764,6 +767,7 @@ static int viridian_load_vcpu_ctxt(struct domain *d,
         return -EINVAL;
 
     viridian_synic_load_vcpu_ctxt(v, &ctxt);
+    viridian_time_load_vcpu_ctxt(v, &ctxt);
 
     return 0;
 }