56534930b5
Previously we would silently suppress VHOST_USER_PROTOCOL_F_CONFIG
during the protocol negotiation if the QEMU stub hadn't implemented
the vhost_dev_config_notifier. However this isn't the only way we can
handle config messages, the existing vdc->get/set_config can do this
as well.
Lightly re-factor the code to check for both potential methods and
instead of silently squashing the feature error out. It is unlikely
that a vhost-user backend expecting to handle CONFIG messages will
behave correctly if they never get sent.
Fixes:
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.. | ||
authz | ||
block | ||
chardev | ||
crypto | ||
disas | ||
exec | ||
fpu | ||
hw | ||
io | ||
libdecnumber | ||
migration | ||
monitor | ||
net | ||
qapi | ||
qemu | ||
qom | ||
scsi | ||
semihosting | ||
standard-headers | ||
sysemu | ||
tcg | ||
ui | ||
user | ||
elf.h | ||
glib-compat.h | ||
qemu-io.h | ||
qemu-main.h |