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vmxnet3: Introduce 'x-old-msi-offsets' back-compat property

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Following the previous patches, where vmxnet3's pci's msi/msix
capability offsets and msix's PBA table offsets have been changed, this
patch introduces a boolean property 'x-old-msi-offsets' to vmxnet3,
whose default is false.

Setting 'x-old-msi-offsets' to 'on' preserves the old offsets behavior,
which allows migration to older versions.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Shmulik Ladkani 2015-12-24 09:17:37 +02:00 committed by Jason Wang
parent 9c087a0504
commit b22e0aef46
2 changed files with 7 additions and 1 deletions
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2
hw/net/vmxnet3.c
View File

@ -2593,6 +2593,8 @@ static const VMStateDescription vmstate_vmxnet3 = {
static Property vmxnet3_properties[] = {
DEFINE_NIC_PROPERTIES(VMXNET3State, conf),
DEFINE_PROP_BIT("x-old-msi-offsets", VMXNET3State, compat_flags,
VMXNET3_COMPAT_FLAG_OLD_MSI_OFFSETS_BIT, false),
DEFINE_PROP_END_OF_LIST(),
};

6
include/hw/compat.h
View File

@ -2,7 +2,11 @@
#define HW_COMPAT_H
#define HW_COMPAT_2_5 \
/* empty */
{\
.driver = "vmxnet3",\
.property = "x-old-msi-offsets",\
.value = "on",\
},
#define HW_COMPAT_2_4 \
{\