[xen staging] x86/HVM: skip offline vCPU-s when dumping VMCBs/VMCSes

[patchbot@xxxxxxx]

commit 3c42cc803c2163daa199021852224b9ca476e9c5
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Dec 3 11:17:50 2021 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Dec 3 11:17:50 2021 +0100

    x86/HVM: skip offline vCPU-s when dumping VMCBs/VMCSes
    
    There's not really any register state associated with vCPU-s that
    haven't been initialized yet, so avoid spamming the log with largely
    useless information while still leaving an indication of the fact.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
 xen/arch/x86/hvm/svm/vmcb.c | 5 +++++
 xen/arch/x86/hvm/vmx/vmcs.c | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/xen/arch/x86/hvm/svm/vmcb.c b/xen/arch/x86/hvm/svm/vmcb.c
index 565e997155..efa085032b 100644
--- a/xen/arch/x86/hvm/svm/vmcb.c
+++ b/xen/arch/x86/hvm/svm/vmcb.c
@@ -242,6 +242,11 @@ static void vmcb_dump(unsigned char ch)
         printk("\n>>> Domain %d <<<\n", d->domain_id);
         for_each_vcpu ( d, v )
         {
+            if ( !v->is_initialised )
+            {
+                printk("\tVCPU %u: not initialized\n", v->vcpu_id);
+                continue;
+            }
             printk("\tVCPU %d\n", v->vcpu_id);
             svm_vmcb_dump("key_handler", v->arch.hvm.svm.vmcb);
         }
diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c
index f9f9bc18cd..7ab15e07a0 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -2133,6 +2133,11 @@ static void vmcs_dump(unsigned char ch)
         printk("\n>>> Domain %d <<<\n", d->domain_id);
         for_each_vcpu ( d, v )
         {
+            if ( !v->is_initialised )
+            {
+                printk("\tVCPU %u: not initialized\n", v->vcpu_id);
+                continue;
+            }
             printk("\tVCPU %d\n", v->vcpu_id);
             vmcs_dump_vcpu(v);
         }
--
generated by git-patchbot for /home/xen/git/xen.git#staging