From 508f7988fd221f1f66c3f8a025c8a2dadac0af01 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 17 Jan 2023 12:22:45 +0100 Subject: migration/vmstate: Introduce VMSTATE_WITH_TMP_TEST() and VMSTATE_BITMAP_TEST() We'll make use of both next in the context of virtio-mem. Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Peter Xu Reviewed-by: Michael S. Tsirkin Reviewed-by: Juan Quintela S Signed-off-by: David Hildenbrand Signed-off-by: Juan Quintela --- include/migration/vmstate.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 64680d824e..28a3b92aa1 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -719,8 +719,9 @@ extern const VMStateInfo vmstate_info_qlist; * '_state' type * That the pointer is right at the start of _tmp_type. */ -#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \ +#define VMSTATE_WITH_TMP_TEST(_state, _test, _tmp_type, _vmsd) { \ .name = "tmp", \ + .field_exists = (_test), \ .size = sizeof(_tmp_type) + \ QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \ type_check_pointer(_state, \ @@ -729,6 +730,9 @@ extern const VMStateInfo vmstate_info_qlist; .info = &vmstate_info_tmp, \ } +#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) \ + VMSTATE_WITH_TMP_TEST(_state, NULL, _tmp_type, _vmsd) + #define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \ .name = "unused", \ .field_exists = (_test), \ @@ -752,8 +756,9 @@ extern const VMStateInfo vmstate_info_qlist; /* _field_size should be a int32_t field in the _state struct giving the * size of the bitmap _field in bits. */ -#define VMSTATE_BITMAP(_field, _state, _version, _field_size) { \ +#define VMSTATE_BITMAP_TEST(_field, _state, _test, _version, _field_size) { \ .name = (stringify(_field)), \ + .field_exists = (_test), \ .version_id = (_version), \ .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\ .info = &vmstate_info_bitmap, \ @@ -761,6 +766,9 @@ extern const VMStateInfo vmstate_info_qlist; .offset = offsetof(_state, _field), \ } +#define VMSTATE_BITMAP(_field, _state, _version, _field_size) \ + VMSTATE_BITMAP_TEST(_field, _state, NULL, _version, _field_size) + /* For migrating a QTAILQ. * Target QTAILQ needs be properly initialized. * _type: type of QTAILQ element -- cgit v1.2.3