From 7aa71ddf263e09afdcb75013b8582aafd9ca00d4 Mon Sep 17 00:00:00 2001

From: "Richard W.M. Jones" <rjones@redhat.com>

Date: Thu, 28 Apr 2016 14:12:23 +0100

Subject: [PATCH] launch: Disable USB in the appliance.

Only saves a tiny amount of time, but as we don't use USB

we might as well disable it.

(cherry picked from commit 29cb8d60d25f650b077e631269ee05c3e4441d75)

---

 src/launch.c | 1 +

 1 file changed, 1 insertion(+)

diff --git a/src/launch.c b/src/launch.c

index 98eca07..9f5b14f 100644

--- a/src/launch.c

+++ b/src/launch.c

@@ -339,6 +339,7 @@ guestfs_int_appliance_command_line (guestfs_h *g, const char *appliance_dev,

      " acpi=off"        /* ACPI is slow - 150-200ms extra on my laptop */

      " printk.time=1"   /* display timestamp before kernel messages */

      " cgroup_disable=memory"   /* saves us about 5 MB of RAM */

+     " usbcore.nousb"           /* disable USB, only saves about 1ms */

      "%s"                       /* root=appliance_dev */

      " %s"                      /* selinux */

      " %s"                      /* quiet/verbose */

-- 

2.7.4