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vmstate: error hint for failed equal checks

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In some cases a failing VMSTATE_*_EQUAL does not mean we detected a bug,
but it's actually the best we can do. Especially in these cases a verbose
error message is required.

Let's introduce infrastructure for specifying a error hint to be used if
equal check fails. Let's do this by adding a parameter to the _EQUAL
macros called _err_hint. Also change all current users to pass NULL as
last parameter so nothing changes for them.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>

Message-Id: <20170623144823.42936-1-pasic@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Halil Pasic 2017-06-23 16:48:23 +02:00 • committed by Juan Quintela
parent 01f6e14c78
commit d2164ad35c
20 changed files with 74 additions and 40 deletions
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2
hw/pci/pci.c
View file

@ -74,7 +74,7 @@ static const VMStateDescription vmstate_pcibus = {
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_INT32_EQUAL(nirq, PCIBus),
VMSTATE_INT32_EQUAL(nirq, PCIBus, NULL),
VMSTATE_VARRAY_INT32(irq_count, PCIBus,
nirq, 0, vmstate_info_int32,
int32_t),

2
hw/pci/pcie_aer.c
View file

@ -813,7 +813,7 @@ const VMStateDescription vmstate_pcie_aer_log = {
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT16(log_num, PCIEAERLog),
VMSTATE_UINT16_EQUAL(log_max, PCIEAERLog),
VMSTATE_UINT16_EQUAL(log_max, PCIEAERLog, NULL),
VMSTATE_VALIDATE("log_num <= log_max", pcie_aer_state_log_num_valid),
VMSTATE_STRUCT_VARRAY_POINTER_UINT16(log, PCIEAERLog, log_num,
vmstate_pcie_aer_err, PCIEAERErr),