net/virtio: improve perf via one-way barriers on used flag

[dpdk.git] / lib / librte_vhost / meson.build

diff --git a/lib/librte_vhost/meson.build b/lib/librte_vhost/meson.build
index 9d25b4d..cb1123a 100644 (file)
--- a/lib/librte_vhost/meson.build
+++ b/lib/librte_vhost/meson.build
@@ -1,12 +1,15 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2017-2018 Intel Corporation
 
-if host_machine.system() != 'linux'
+if not is_linux
        build = false
+       reason = 'only supported on linux'
 endif
 if has_libnuma == 1
        dpdk_conf.set10('RTE_LIBRTE_VHOST_NUMA', true)
 endif
+dpdk_conf.set('RTE_LIBRTE_VHOST_POSTCOPY',
+             cc.has_header('linux/userfaultfd.h'))
 version = 4
 allow_experimental_apis = true
 cflags += '-fno-strict-aliasing'