diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 4aeb665ffbb0bbae17b3fb3898bac4474615f40f..3d8377f75eda2d1140a546c2d444be1d368f97b8 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -6604,7 +6604,7 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
 	struct page **pages;
 	void *blob, *hdr;
 	unsigned long n;
-	int ret;
+	int ret, offset;
 
 	if (!sev_guest(kvm))
 		return -ENOTTY;
@@ -6630,6 +6630,10 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
 	if (!data)
 		goto e_unpin_memory;
 
+	offset = params.guest_uaddr & (PAGE_SIZE - 1);
+	data->guest_address = __sme_page_pa(pages[0]) + offset;
+	data->guest_len = params.guest_len;
+
 	blob = psp_copy_user_blob(params.trans_uaddr, params.trans_len);
 	if (IS_ERR(blob)) {
 		ret = PTR_ERR(blob);
@@ -6644,8 +6648,8 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
 		ret = PTR_ERR(hdr);
 		goto e_free_blob;
 	}
-	data->trans_address = __psp_pa(blob);
-	data->trans_len = params.trans_len;
+	data->hdr_address = __psp_pa(hdr);
+	data->hdr_len = params.hdr_len;
 
 	data->handle = sev->handle;
 	ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_SECRET, data, &argp->error);