configure: Add explanation for --enable-xen-pci-passthrough

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>

diff --git a/configure b/configure
index 59f91ab3f99656fbffc4a3961d87770531ba2f12..a8498ab393e8f8e1b49e1cfd369d5b49d1cefc3a 100755 (executable)
--- a/configure
+++ b/configure
@@ -1588,7 +1588,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   virtfs          VirtFS
   mpath           Multipath persistent reservation passthrough
   xen             xen backend driver support
-  xen-pci-passthrough
+  xen-pci-passthrough    PCI passthrough support for Xen
   brlapi          BrlAPI (Braile)
   curl            curl connectivity
   membarrier      membarrier system call (for Linux 4.14+ or Windows)