[PATCH 19/19] qemu: capabilities: Enable QEMU_CAPS_INCREMENTAL_BACKUP

[Peter Krempa <pkrempa@xxxxxxxxxx>]

For incremental backup we need QEMU_CAPS_BLOCKDEV,
QEMU_CAPS_BLOCKDEV_REOPEN, QEMU_CAPS_MIGRATION_PARAM_BLOCK_BITMAP_MAPPING.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_capabilities.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 38555dde98..7cc2532954 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -5164,8 +5164,10 @@ virQEMUCapsInitQMPVersionCaps(virQEMUCapsPtr qemuCaps)
 void
 virQEMUCapsInitProcessCapsInterlock(virQEMUCapsPtr qemuCaps)
 {
-    if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV))
-        virQEMUCapsClear(qemuCaps, QEMU_CAPS_INCREMENTAL_BACKUP);
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV) &&
+        virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV_REOPEN) &&
+        virQEMUCapsGet(qemuCaps, QEMU_CAPS_MIGRATION_PARAM_BLOCK_BITMAP_MAPPING))
+        virQEMUCapsSet(qemuCaps, QEMU_CAPS_INCREMENTAL_BACKUP);

     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE) &&
         !virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_STORAGE_WERROR)) {
-- 
2.29.2