commit c3d80af5ecf4f00db4a8d3ac5eca6edc0c9f061e
author Zhao Liu <zhao1.liu@intel.com> Tue Mar 18 21:02:07 2025 +0800
committer Paolo Bonzini <pbonzini@redhat.com> Fri Mar 21 12:56:00 2025 +0100
tree 047fb65be900ff25188ce0f892acdd0f3beabd71
parent 6ca5c3bedf3265358cf9033577dd30ed865d1cb3

rust/vmstate: Fix num field when varray flags are set

Array type vmstate has the VMStateField with `num` equals its length.

When the varray vmstate is built based a array type, the `num` field
should be cleaned to 0, because varray uses `num_offset` instead of
`num` to store elements number information.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250318130219.1799170-4-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust/qemu-api/src/vmstate.rs

diff --git a/rust/qemu-api/src/vmstate.rs b/rust/qemu-api/src/vmstate.rs
index 9533b12..e323330 100644
--- a/rust/qemu-api/src/vmstate.rs
+++ b/rust/qemu-api/src/vmstate.rs
@@ -275,6 +275,7 @@ pub const fn with_varray_flag<T: VMState>(mut self, flag: VMStateFlags) -> VMSta
         assert!((self.flags.0 & VMStateFlags::VMS_ARRAY.0) != 0);
         self.flags = VMStateFlags(self.flags.0 & !VMStateFlags::VMS_ARRAY.0);
         self.flags = VMStateFlags(self.flags.0 | flag.0);
+        self.num = 0; // varray uses num_offset instead of num.
         self
     }