[gnome-continuous-yocto/gnomeostree-3.28-rocko: 2370/8267] runqemu: Enable virtio RNG for all platforms

[Emmanuele Bassi <ebassi src gnome org>]

commit b2dc9c7ee2431456a562d10d08e6416b13930189
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Thu Sep 1 22:10:21 2016 +0100

    runqemu: Enable virtio RNG for all platforms
    
    We have problems where systems simply stop booting and hang. This is due
    to a lack of entropy which means ssh keys and networking can't be brought
    up. Adding in the virtio-rng passthrough support allows host entropy to
    pass into the guess and avoids these hangs.
    
    This is particularly problematic after the gnutls upgrade which starts
    using /dev/random instead of /dev/urandom but was an issue we'd occasionally
    seem before that.
    
    It particualrly affected x86 and ppc machines for some reason.
    
    (From OE-Core rev: 51b001909f1856c45cf87091d6e4446c266d5786)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 scripts/runqemu |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/scripts/runqemu b/scripts/runqemu
index b9dbe97..fca8d1d 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -806,6 +806,9 @@ class BaseConfig(object):
 
         self.qemu_opt = "%s %s %s %s %s %s" % (qemu_bin, self.get('NETWORK_CMD'), self.qemu_opt_script, 
self.get('ROOTFS_OPTIONS'), self.get('QB_DTB'), self.get('QB_OPT_APPEND'))
 
+        # Enable virtio RNG else we can run out of entropy in guests
+        self.qemu_opt += " -device virtio-rng-pci"
+
         if self.serialstdio:
             logger.info("Interrupt character is '^]'")
             cmd = "stty intr ^]"