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migration: push Error **errp into vmstate_load_state()

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This is an incremental step in converting vmstate loading
code to report error via Error objects instead of directly
printing it to console/monitor.
It is ensured that vmstate_load_state() must report an error
in errp, in case of failure.

The errors are temporarily reported using error_report_err().
This is removed in the subsequent patches in this series,
when we are actually able to propagate the error to the calling
function using errp. Whereas, if we want the function to exit on
error, then error_fatal is passed.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Arun Menon <armenon@redhat.com>
Tested-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Link: https://lore.kernel.org/r/20250918-propagate_tpm_error-v14-2-36f11a6fb9d3@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Arun Menon 2025-09-18 20:53:19 +05:30 • committed by Peter Xu
parent 73b42fc58d
commit c632ffbd74
15 changed files with 143 additions and 55 deletions
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2
include/migration/vmstate.h
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@ -1196,7 +1196,7 @@ extern const VMStateInfo vmstate_info_qlist;
}
int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, int version_id);
void *opaque, int version_id, Error **errp);
int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, JSONWriter *vmdesc);
int vmstate_save_state_with_err(QEMUFile *f, const VMStateDescription *vmsd,