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authorRichard Purdie <richard.purdie@linuxfoundation.org>2016-09-01 22:10:21 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-09-09 12:06:54 +0100
commit51b001909f1856c45cf87091d6e4446c266d5786 (patch)
treeedabca796aac829f011d01cf47bc224886da50d8
parent5e61766d976b6d036946c1b4e4ac742a33a03815 (diff)
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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. Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rwxr-xr-xscripts/runqemu3
1 files changed, 3 insertions, 0 deletions
diff --git a/scripts/runqemu b/scripts/runqemu
index b9dbe97cba..fca8d1d29d 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 ^]"