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Remove unnecessary minimum_version_id_old fields

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The migration code will not look at a VMStateDescription's
minimum_version_id_old field unless that VMSD has set the
load_state_old field to something non-NULL.  (The purpose of
minimum_version_id_old is to specify what migration version is needed
for the code in the function pointed to by load_state_old to be able
to handle it on incoming migration.)

We have exactly one VMSD which still has a load_state_old,
in the PPC CPU; every other VMSD which sets minimum_version_id_old
is doing so unnecessarily. Delete all the unnecessary ones.

Commit created with:
  sed -i '/\.minimum_version_id_old/d' $(git grep -l '\.minimum_version_id_old')
with the one legitimate use then hand-edited back in.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>

Signed-off-by: Juan Quintela <quintela@redhat.com>

---

It missed vmstate_ppc_cpu.
This commit is contained in:
Peter Maydell 2022-01-18 10:44:34 +00:00 • committed by Juan Quintela
parent 8c0ec0b2b0
commit 17e3134061
26 changed files with 0 additions and 37 deletions
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2
target/ppc/machine.c
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@ -421,7 +421,6 @@ static const VMStateDescription vmstate_tm = {
.name = "cpu/tm",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.needed = tm_needed,
.fields = (VMStateField []) {
VMSTATE_UINTTL_ARRAY(env.tm_gpr, PowerPCCPU, 32),
@ -672,7 +671,6 @@ const VMStateDescription vmstate_ppc_cpu = {
.name = "cpu",
.version_id = 5,
.minimum_version_id = 5,
.minimum_version_id_old = 4,
.pre_save = cpu_pre_save,
.post_load = cpu_post_load,
.fields = (VMStateField[]) {