[libvirt] [PATCH] fix kvm_pv_eoi with kvmclock

When both kvmclock and kvm_pv_eoi are configured (either disabled or enabled) libvirt will generate invalid CPU specification due to the fact that even though kvmclock causes the CPU to be specified, it doesn't set have_cpu flag to true (and the new kvm_pv_eoi as well). This patch fixes the issue and adds a test exactly for that to show that it is fixed correctly (and also to keep it that way in the future of course). --- src/qemu/qemu_command.c | 2 ++ .../qemuxml2argv-kvmclock+eoi-disabled.args | 4 ++++ .../qemuxml2argv-kvmclock+eoi-disabled.xml | 27 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 1 + 4 files changed, 34 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.xml diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 20730a9..09f412e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -4210,6 +4210,7 @@ qemuBuildCpuArgStr(const struct qemud_driver *driver, virBufferAsprintf(&buf, "%s,%ckvmclock", have_cpu ? "" : default_model, sign); + have_cpu = true; break; } } @@ -4224,6 +4225,7 @@ qemuBuildCpuArgStr(const struct qemud_driver *driver, virBufferAsprintf(&buf, "%s,%ckvm_pv_eoi", have_cpu ? "" : default_model, sign); + have_cpu = true; } if (virBufferError(&buf)) diff --git a/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.args b/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.args new file mode 100644 index 0000000..f7ade0a --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.args @@ -0,0 +1,4 @@ +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc \ +-cpu qemu32,-kvmclock,-kvm_pv_eoi -m 214 -smp 6 -nographic -monitor \ +unix:/tmp/test-monitor,server,nowait -boot n -net none -serial \ +none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.xml b/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.xml new file mode 100644 index 0000000..a79b09f --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-kvmclock+eoi-disabled.xml @@ -0,0 +1,27 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219100</memory> + <currentMemory unit='KiB'>219100</currentMemory> + <vcpu placement='static'>6</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='network'/> + </os> + <features> + <acpi/> + <apic eoi='off'/> + <pae/> + </features> + <clock offset='utc'> + <timer name='kvmclock' present='no'/> + </clock> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <controller type='usb' index='0'/> + <memballoon model='virtio'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 0757e37..7732ae1 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -407,6 +407,7 @@ mymain(void) DO_TEST("cpu-eoi-enabled", QEMU_CAPS_ENABLE_KVM); DO_TEST("eoi-disabled", NONE); DO_TEST("eoi-enabled", NONE); + DO_TEST("kvmclock+eoi-disabled", QEMU_CAPS_ENABLE_KVM); DO_TEST("hugepages", QEMU_CAPS_MEM_PATH); DO_TEST("disk-cdrom", NONE); -- 1.7.12