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migration: Remove load_state_old and minimum_version_id_old

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There are no longer any VMStateDescription structs in the tree which
use the load_state_old support for custom handling of incoming
migration from very old QEMU.  Remove the mechanism entirely.

This includes removing one stray useless setting of
minimum_version_id_old in a VMStateDescription with no load_state_old
function, which crept in after the global weeding-out of them in
commit 17e3134061.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220215175705.3846411-1-peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Peter Maydell 2022-02-15 17:57:05 +00:00 • committed by Dr. David Alan Gilbert
parent 3ff5740187
commit 1862198702
4 changed files with 2 additions and 17 deletions
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6
migration/vmstate.c
View file

@ -90,12 +90,6 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
return -EINVAL;
}
if (version_id < vmsd->minimum_version_id) {
if (vmsd->load_state_old &&
version_id >= vmsd->minimum_version_id_old) {
ret = vmsd->load_state_old(f, opaque, version_id);
trace_vmstate_load_state_end(vmsd->name, "old path", ret);
return ret;
}
error_report("%s: incoming version_id %d is too old "
"for local minimum version_id %d",
vmsd->name, version_id, vmsd->minimum_version_id);