qemu-x86: Add commandline options to improve boot

To try and help with the inermittent rcu stalls and boot issues with qemu
add some kernel commandline options commonly used with qemu instances which
were suggested may help.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/conf/machine/include/qemuboot-x86.inc b/meta/conf/machine/include/qemuboot-x86.inc
index 00385400275872b40ffac17c246b1d8da36066bc..a2dcdc6d5ac92fb15b508a1a7e0f895ec1aed079 100644 (file)
--- a/meta/conf/machine/include/qemuboot-x86.inc
+++ b/meta/conf/machine/include/qemuboot-x86.inc
@@ -9,6 +9,6 @@ QB_CPU_KVM_x86-64 = "-cpu IvyBridge -machine q35"
 
 QB_AUDIO_DRV = "alsa"
 QB_AUDIO_OPT = "-soundhw ac97,es1370"
-QB_KERNEL_CMDLINE_APPEND = "oprofile.timer=1"
+QB_KERNEL_CMDLINE_APPEND = "oprofile.timer=1 tsc=reliable no_timer_check rcupdate.rcu_expedited=1"
 QB_OPT_APPEND = "-usb -device usb-tablet"