Re: [libvirt] [PATCH] qemu: enforce maximum ports value for nec-xhci
On 01/31/2017 09:08 AM, Ján Tomko wrote:
This controller only allows up to 15 ports.
https://bugzilla.redhat.com/show_bug.cgi?id=1375417
---
src/qemu/qemu_domain.c | 8 ++++++++
.../qemuxml2argv-usb-controller-xhci-limit.xml | 16 ++++++++++++++++
tests/qemuxml2argvtest.c | 3 +++
3 files changed, 27 insertions(+)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-usb-controller-xhci-limit.xml
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index c6ce090..61489e0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3147,6 +3147,14 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
if (dev->type == VIR_DOMAIN_DEVICE_CONTROLLER) {
virDomainControllerDefPtr cont = dev->data.controller;
+ if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_USB &&
+ cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI &&
+ cont->opts.usbopts.ports > 15) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("nec-xhci controller only supports up to 15
ports"));
+ goto cleanup;
+ }
+
15 is a magic number it seems... Perhaps a #define in domain_conf.h
somewhere to declare the max number of ports. Although yes, I do see
that virDomainUSBAddressControllerModelToPorts also uses magic numbers.
I looked at the QEMU code for nec-usb-xhci - too bad it's not query-able
as a property. The MAXPORTS_2 and MAXPORTS_3 values being defined as 15
and the uports as the max of those two values.
I see tha the QUSB{1|2} ports for the libxl code could have a similar
issue, but who knows what their maximum is...
ACK - w/ a #define somewhere.
John
if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS
&&
!qemuDomainMachineIsI440FX(def)) {
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-xhci-limit.xml
b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-xhci-limit.xml
new file mode 100644
index 0000000..5ff2de7
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-xhci-limit.xml
@@ -0,0 +1,16 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219136</memory>
+ <currentMemory unit='KiB'>219136</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <controller type='usb' index='0' model='nec-xhci'
ports='16'/>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 3532cb5..78cb609 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1415,6 +1415,9 @@ mymain(void)
QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_PIIX3_USB_UHCI,
QEMU_CAPS_NEC_USB_XHCI, QEMU_CAPS_NEC_USB_XHCI_PORTS,
QEMU_CAPS_USB_HUB);
+ DO_TEST_PARSE_ERROR("usb-controller-xhci-limit",
+ QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_PIIX3_USB_UHCI,
+ QEMU_CAPS_NEC_USB_XHCI, QEMU_CAPS_NEC_USB_XHCI_PORTS);
DO_TEST("smbios", QEMU_CAPS_SMBIOS_TYPE);
DO_TEST_PARSE_ERROR("smbios-date", QEMU_CAPS_SMBIOS_TYPE);