[libvirt] [PATCH 3/4] libxl: Add support for max_grant_frames
Daniel P. Berrangé
berrange at redhat.com
Wed Mar 13 09:56:06 UTC 2019
On Tue, Mar 12, 2019 at 02:34:43PM -0600, Jim Fehlig wrote:
> On 3/12/19 8:17 AM, Daniel P. Berrangé wrote:
> > On Fri, Mar 08, 2019 at 04:05:57PM -0700, Jim Fehlig wrote:
> > > Add support for setting max_grant_frames in libxl domain config
> > > object and include a test to check that it is properly converted
> > > from XML to libxl domain config.
> > >
> > > Signed-off-by: Jim Fehlig <jfehlig at suse.com>
> > > ---
> > > src/libxl/libxl_conf.c | 9 ++
> > > .../max-gntframes-hvm.json | 90 +++++++++++++++++++
> > > .../max-gntframes-hvm.xml | 37 ++++++++
> > > tests/libxlxml2domconfigtest.c | 3 +
> > > 4 files changed, 139 insertions(+)
> > >
> > > diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
> > > index c769050ff1..e55a9fe22e 100644
> > > --- a/src/libxl/libxl_conf.c
> > > +++ b/src/libxl/libxl_conf.c
> > > @@ -393,6 +393,15 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
> > > def->mem.cur_balloon = VIR_ROUND_UP(def->mem.cur_balloon, 1024);
> > > b_info->max_memkb = virDomainDefGetMemoryInitial(def);
> > > b_info->target_memkb = def->mem.cur_balloon;
> > > +
> > > +#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
> > > + for (i = 0; i < def->ncontrollers; i++) {
> > > + if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_XENBUS &&
> > > + def->controllers[i]->opts.xenbusopts.maxGrantFrames > 0)
> > > + b_info->max_grant_frames = def->controllers[i]->opts.xenbusopts.maxGrantFrames;
> > > + }
> > > +#endif
> > > +
> > > if (hvm || pvh) {
> > > if (caps &&
> > > def->cpu && def->cpu->mode == (VIR_CPU_MODE_HOST_PASSTHROUGH)) {
> > > diff --git a/tests/libxlxml2domconfigdata/max-gntframes-hvm.json b/tests/libxlxml2domconfigdata/max-gntframes-hvm.json
> > > new file mode 100644
> > > index 0000000000..ef602f09fc
> > > --- /dev/null
> > > +++ b/tests/libxlxml2domconfigdata/max-gntframes-hvm.json
> > > @@ -0,0 +1,90 @@
> > > +{
> > > + "c_info": {
> > > + "type": "hvm",
> > > + "name": "test-hvm",
> > > + "uuid": "2147d599-9cc6-c0dc-92ab-4064b5446e9b"
> > > + },
> > > + "b_info": {
> > > + "max_vcpus": 4,
> > > + "avail_vcpus": [
> > > + 0,
> > > + 1,
> > > + 2,
> > > + 3
> > > + ],
> > > + "max_memkb": 1048576,
> > > + "target_memkb": 1048576,
> > > + "video_memkb": 8192,
> > > + "shadow_memkb": 12288,
> > > + "max_grant_frames": 64,
> > > + "device_model_version": "qemu_xen",
> > > + "device_model": "/bin/true",
> > > + "sched_params": {
> > > +
> > > + },
> > > + "type.hvm": {
> > > + "pae": "True",
> > > + "apic": "True",
> > > + "acpi": "True",
> > > + "vga": {
> > > + "kind": "cirrus"
> > > + },
> > > + "vnc": {
> > > + "enable": "True",
> > > + "listen": "0.0.0.0",
> > > + "findunused": "False"
> > > + },
> > > + "sdl": {
> > > + "enable": "False"
> > > + },
> > > + "spice": {
> > > +
> > > + },
> > > + "boot": "c",
> > > + "rdm": {
> > > +
> > > + }
> > > + },
> > > + "arch_arm": {
> > > +
> > > + }
> > > + },
> > > + "disks": [
> > > + {
> > > + "pdev_path": "/var/lib/xen/images/test-hvm.img",
> > > + "vdev": "hda",
> > > + "backend": "qdisk",
> > > + "format": "raw",
> > > + "removable": 1,
> > > + "readwrite": 1
> > > + }
> > > + ],
> > > + "nics": [
> > > + {
> > > + "devid": 0,
> > > + "mac": "00:16:3e:66:12:b4",
> > > + "bridge": "br0",
> > > + "script": "/etc/xen/scripts/vif-bridge",
> > > + "nictype": "vif_ioemu"
> > > + }
> > > + ],
> > > + "vfbs": [
> > > + {
> > > + "devid": -1,
> > > + "vnc": {
> > > + "enable": "True",
> > > + "listen": "0.0.0.0",
> > > + "findunused": "False"
> > > + },
> > > + "sdl": {
> > > + "enable": "False"
> > > + }
> > > + }
> > > + ],
> > > + "vkbs": [
> > > + {
> > > + "devid": -1
> > > + }
> > > + ],
> > > + "on_reboot": "restart"
> > > +}
> > > diff --git a/tests/libxlxml2domconfigdata/max-gntframes-hvm.xml b/tests/libxlxml2domconfigdata/max-gntframes-hvm.xml
> > > new file mode 100644
> > > index 0000000000..910bbda10b
> > > --- /dev/null
> > > +++ b/tests/libxlxml2domconfigdata/max-gntframes-hvm.xml
> > > @@ -0,0 +1,37 @@
> > > +<domain type='xen'>
> > > + <name>test-hvm</name>
> > > + <description>None</description>
> > > + <uuid>2147d599-9cc6-c0dc-92ab-4064b5446e9b</uuid>
> > > + <memory>1048576</memory>
> > > + <currentMemory>1048576</currentMemory>
> > > + <vcpu>4</vcpu>
> > > + <on_poweroff>destroy</on_poweroff>
> > > + <on_reboot>restart</on_reboot>
> > > + <on_crash>destroy</on_crash>
> > > + <clock offset='utc'/>
> > > + <os>
> > > + <type>hvm</type>
> > > + <loader>/usr/lib/xen/boot/hvmloader</loader>
> > > + <boot dev='hd'/>
> > > + </os>
> > > + <features>
> > > + <apic/>
> > > + <acpi/>
> > > + <pae/>
> > > + </features>
> > > + <devices>
> > > + <emulator>/bin/true</emulator>
> > > + <disk type='file' device='disk'>
> > > + <driver name='qemu'/>
> > > + <source file='/var/lib/xen/images/test-hvm.img'/>
> > > + <target dev='hda'/>
> > > + </disk>
> > > + <controller type='xenbus' maxGrantFrames='64'/>
> >
> > Normally, <controller> would come before <disk>
>
> virDomainDefFormatInternal() formats controllers after disks. I can change
> that if you want but it should probably be done as a separate patch.
No, don't bother. I was mistakenly thinking we formatted controllers first.
Regards,
Daniel
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