quoted

@@ -2089,6 +2089,7 @@ static void *snp_context_create(struct kvm *kvm, struct kvm_sev_cmd *argp)
              goto e_free;

      sev->snp_certs_data = certs_data;
+     sev->snp_certs_len = 0;

      return context;

Better to move the fix to PATCH 45.

This part isn't a fix, but part of the implementation since
snp_certs_len is added in this patch here

quoted

diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 221b38d3c845..dced46559508 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h

@@ -94,6 +94,7 @@ struct kvm_sev_info {
      u64 snp_init_flags;
      void *snp_context;      /* SNP guest context page */
      void *snp_certs_data;
+     unsigned int snp_certs_len; /* Size of instance override for certs */
      struct mutex guest_req_lock; /* Lock for guest request handling */

      u64 sev_features;       /* Features set at VMSA creation */

-- 
-Dionna Glaze, PhD (she/her)