[Xen-devel] [PATCH v8 07/11] x86/hvm: Introduce viridian_save_vcpu_ctxt_one() func

[Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>]

This is used to save data from a single instance.

Signed-off-by: Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>
---
 xen/arch/x86/hvm/viridian.c | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/xen/arch/x86/hvm/viridian.c b/xen/arch/x86/hvm/viridian.c
index 694eae6..ed164ab 100644
--- a/xen/arch/x86/hvm/viridian.c
+++ b/xen/arch/x86/hvm/viridian.c
@@ -1026,20 +1026,30 @@ static int viridian_load_domain_ctxt(struct domain *d, 
hvm_domain_context_t *h)
 HVM_REGISTER_SAVE_RESTORE(VIRIDIAN_DOMAIN, viridian_save_domain_ctxt,
                           viridian_load_domain_ctxt, 1, HVMSR_PER_DOM);
 
-static int viridian_save_vcpu_ctxt(struct domain *d, hvm_domain_context_t *h)
+static int viridian_save_vcpu_ctxt_one(struct vcpu *v, hvm_domain_context_t *h)
 {
-    struct vcpu *v;
+    struct hvm_viridian_vcpu_context ctxt;
 
-    if ( !is_viridian_domain(d) )
+    if ( !is_viridian_domain(v->domain) )
         return 0;
 
+    memset(&ctxt, 0, sizeof(ctxt));
+    ctxt.vp_assist_msr = v->arch.hvm_vcpu.viridian.vp_assist.msr.raw;
+    ctxt.vp_assist_pending = v->arch.hvm_vcpu.viridian.vp_assist.pending;
+
+    if ( hvm_save_entry(VIRIDIAN_VCPU, v->vcpu_id, h, &ctxt) != 0 )
+        return 1;
+    return 0;
+}
+
+static int viridian_save_vcpu_ctxt(struct domain *d, hvm_domain_context_t *h)
+{
+    struct vcpu *v;
+
     for_each_vcpu( d, v ) {
-        struct hvm_viridian_vcpu_context ctxt = {
-            .vp_assist_msr = v->arch.hvm_vcpu.viridian.vp_assist.msr.raw,
-            .vp_assist_pending = v->arch.hvm_vcpu.viridian.vp_assist.pending,
-        };
+        int rc = viridian_save_vcpu_ctxt_one(v, h);
 
-        if ( hvm_save_entry(VIRIDIAN_VCPU, v->vcpu_id, h, &ctxt) != 0 )
+        if ( rc != 0 )
             return 1;
     }
 
-- 
2.7.4


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