From 7f5f8f87a4180a2b05188047c6a05da5571f94e2 Mon Sep 17 00:00:00 2001 From: Aníbal Limón Date: Thu, 22 Oct 2015 10:18:37 -0500 Subject: runqemu: Enable support for kvm without vhost in x86 and x86_64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit KVM can be used without vhost so add a new option to runqemu for use kvm with vhost. Example, runqemu qemux86 core-image-minimal kvm # kvm without vhost runqemu qemux86 core-image-minimal kvm-vhost # kvm with vhost [YOCTO #7443] Signed-off-by: Aníbal Limón Signed-off-by: Ross Burton --- scripts/runqemu | 31 +++++++++++++++++++++---------- scripts/runqemu-internal | 6 +++++- 2 files changed, 26 insertions(+), 11 deletions(-) diff --git a/scripts/runqemu b/scripts/runqemu index 5989507a21..e01d276f7b 100755 --- a/scripts/runqemu +++ b/scripts/runqemu @@ -33,6 +33,7 @@ usage() { echo " nographic - disables video console" echo " serial - enables a serial console on /dev/ttyS0" echo " kvm - enables KVM when running qemux86/qemux86-64 (VT-capable CPU required)" + echo " kvm-vhost - enables KVM with vhost support when running qemux86/qemux86-64 (VT-capable CPU required)" echo " publicvnc - enable a VNC server open to all hosts" echo " qemuparams=\"xyz\" - specify custom parameters to QEMU" echo " bootparams=\"xyz\" - specify custom kernel parameters during boot" @@ -71,6 +72,8 @@ SERIALSTDIO="" TCPSERIAL_PORTNUM="" KVM_ENABLED="no" KVM_ACTIVE="no" +VHOST_ENABLED="no" +VHOST_ACTIVE="no" # Determine whether the file is a kernel or QEMU image, and set the # appropriate variables @@ -170,6 +173,11 @@ while true; do KVM_ENABLED="yes" KVM_CAPABLE=`grep -q 'vmx\|svm' /proc/cpuinfo && echo 1` ;; + "kvm-vhost") + KVM_ENABLED="yes" + KVM_CAPABLE=`grep -q 'vmx\|svm' /proc/cpuinfo && echo 1` + VHOST_ENABLED="yes" + ;; "slirp") SLIRP_ENABLED="yes" ;; @@ -270,12 +278,6 @@ if [ "x$KVM_ENABLED" = "xyes" ]; then echo "$YOCTO_KVM_WIKI"; exit 1; fi - if [ ! -e /dev/vhost-net ]; then - echo "Missing virtio net device. Have you inserted vhost-net module?" - echo "For further help see:" - echo "$YOCTO_PARAVIRT_KVM_WIKI"; - exit 1; - fi if [ -w /dev/kvm -a -r /dev/kvm ]; then SCRIPT_QEMU_OPT="$SCRIPT_QEMU_OPT -enable-kvm" KVM_ACTIVE="yes" @@ -285,13 +287,22 @@ if [ "x$KVM_ENABLED" = "xyes" ]; then echo "$YOCTO_KVM_WIKI"; exit 1; fi - if [ ! -w /dev/vhost-net -o ! -r /dev/vhost-net ]; then - if [ "$SLIRP_ENABLED" != "yes" ] ; then + if [ "x$VHOST_ENABLED" = "xyes" ]; then + if [ ! -e /dev/vhost-net ]; then + echo "Missing virtio net device. Have you inserted vhost-net module?" + echo "For further help see:" + echo "$YOCTO_PARAVIRT_KVM_WIKI"; + exit 1; + fi + + if [ -w /dev/vhost-net -a -r /dev/vhost-net ]; then + VHOST_ACTIVE="yes" + else echo "You have no rights on /dev/vhost-net." echo "Please change the ownership of this file as described at:" - echo "$YOCTO_PARAVIRT_KVM_WIKI"; + echo "$YOCTO_KVM_WIKI"; exit 1; - fi + fi fi fi diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal index 13840b3023..38ea965bdf 100755 --- a/scripts/runqemu-internal +++ b/scripts/runqemu-internal @@ -267,7 +267,11 @@ else KERNEL_NETWORK_CMD="ip=192.168.7.$n2::192.168.7.$n1:255.255.255.0" QEMU_TAP_CMD="-net tap,vlan=0,ifname=$TAP,script=no,downscript=no" if [ "$KVM_ACTIVE" = "yes" ]; then - QEMU_NETWORK_CMD="-net nic,model=virtio $QEMU_TAP_CMD,vhost=on" + if [ "$VHOST_ACTIVE" = "yes" ]; then + QEMU_NETWORK_CMD="-net nic,model=virtio $QEMU_TAP_CMD,vhost=on" + else + QEMU_NETWORK_CMD="-net nic,model=virtio $QEMU_TAP_CMD" + fi DROOT="/dev/vda" ROOTFS_OPTIONS="-drive file=$ROOTFS,if=virtio,format=raw" else -- cgit 1.2.3-korg