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fw_cfg: add write callback

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Reintroduce the write callback that was removed when write support was
removed in commit 023e314856.

Contrary to the previous callback implementation, the write_cb
callback is called whenever a write happened, so handlers must be
ready to handle partial write as necessary.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-09-11 18:59:23 +02:00 • committed by Michael S. Tsirkin
parent 06592d7e28
commit 5f9252f7cc
6 changed files with 18 additions and 9 deletions
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2
hw/acpi/vmgenid.c
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@ -124,7 +124,7 @@ void vmgenid_add_fw_cfg(VmGenIdState *vms, FWCfgState *s, GArray *guid)
fw_cfg_add_file(s, VMGENID_GUID_FW_CFG_FILE, guid->data,
VMGENID_FW_CFG_SIZE);
/* Create a read-write fw_cfg file for Address */
fw_cfg_add_file_callback(s, VMGENID_ADDR_FW_CFG_FILE, NULL, NULL,
fw_cfg_add_file_callback(s, VMGENID_ADDR_FW_CFG_FILE, NULL, NULL, NULL,
vms->vmgenid_addr_le,
ARRAY_SIZE(vms->vmgenid_addr_le), false);
}