[Xen-devel] [PATCH v9 01/11] x86/cpu: Introduce vmce_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>

---
Changes since V8:
        - Move return check to the one function.
---
 xen/arch/x86/cpu/mcheck/vmce.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/xen/arch/x86/cpu/mcheck/vmce.c b/xen/arch/x86/cpu/mcheck/vmce.c
index e07cd2f..d21433b 100644
--- a/xen/arch/x86/cpu/mcheck/vmce.c
+++ b/xen/arch/x86/cpu/mcheck/vmce.c
@@ -349,6 +349,20 @@ int vmce_wrmsr(uint32_t msr, uint64_t val)
     return ret;
 }
 
+static int vmce_save_vcpu_ctxt_one(struct vcpu *v, hvm_domain_context_t *h)
+ {
+    struct hvm_vmce_vcpu ctxt;
+
+    ctxt.caps = v->arch.vmce.mcg_cap;
+    ctxt.mci_ctl2_bank0 = v->arch.vmce.bank[0].mci_ctl2;
+    ctxt.mci_ctl2_bank1 = v->arch.vmce.bank[1].mci_ctl2;
+    ctxt.mcg_ext_ctl = v->arch.vmce.mcg_ext_ctl;
+
+    if ( hvm_save_entry(VMCE_VCPU, v->vcpu_id, h, &ctxt) != 0 )
+        return 1;
+    return 0;
+ }
+
 static int vmce_save_vcpu_ctxt(struct domain *d, hvm_domain_context_t *h)
 {
     struct vcpu *v;
@@ -356,14 +370,7 @@ static int vmce_save_vcpu_ctxt(struct domain *d, 
hvm_domain_context_t *h)
 
     for_each_vcpu ( d, v )
     {
-        struct hvm_vmce_vcpu ctxt = {
-            .caps = v->arch.vmce.mcg_cap,
-            .mci_ctl2_bank0 = v->arch.vmce.bank[0].mci_ctl2,
-            .mci_ctl2_bank1 = v->arch.vmce.bank[1].mci_ctl2,
-            .mcg_ext_ctl = v->arch.vmce.mcg_ext_ctl,
-        };
-
-        err = hvm_save_entry(VMCE_VCPU, v->vcpu_id, h, &ctxt);
+        err = vmce_save_vcpu_ctxt_one(v, h);
         if ( err )
             break;
     }
-- 
2.7.4


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