From 30166a4ea5a0cb233f7b9a96473364da03079271 Mon Sep 17 00:00:00 2001
From: Anatol Belski <anbelski@linux.microsoft.com>
Date: Thu, 19 Feb 2026 19:41:34 +0100
Subject: [PATCH] vmm: openapi: Sync DiskConfig OpenAPI spec

Add backing_files field to the REST API.

Note: This backport does not include the 'sparse' field as the
corresponding feature support is not backported.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
(cherry picked from commit e36096db3e8a9adba23348185f97cac59812db14)
---
 vmm/src/api/openapi/cloud-hypervisor.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index 1e19e7224..d10832101 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -941,6 +941,9 @@ components:
           type: array
           items:
             $ref: "#/components/schemas/VirtQueueAffinity"
+        backing_files:
+          type: boolean
+          default: false
 
     NetConfig:
       type: object