[libvirt] [PATCH 2/3] qemu: allow to specify pit timer tick policy=discard
John Ferlan
jferlan at redhat.com
Thu Jan 5 16:52:55 UTC 2017
On 12/09/2016 09:28 AM, Maxim Nestratov wrote:
> Reuse "kvm-pit-device" test case for testing it.
>
> Signed-off-by: Maxim Nestratov <mnestratov at virtuozzo.com>
> ---
> src/qemu/qemu_command.c | 8 +++++++-
> tests/qemuxml2argvdata/qemuxml2argv-kvm-pit-device.xml | 2 +-
> tests/qemuxml2argvtest.c | 1 +
> 3 files changed, 9 insertions(+), 2 deletions(-)
>
My suggestion here - let's rename *pit-device.xml to *pit-discard.xml
and do the same for the .args file. That'll make it clearer. Of course
that means modifying argvtest.c as well.
This would alter the commit message to:
qemu: Allow to specify pit timer tick policy=discard
Separate out the "policy=discard" into it's own specific
qemu command line.
We'll rename "kvm-pit-device" test case to be "kvm-pit-discard"
since it has the syntax we'd be using.
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index cd243e4..7f10d75 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -6158,8 +6158,14 @@ qemuBuildClockCommandLine(virCommandPtr cmd,
> return -1;
> }
> break;
> - case VIR_DOMAIN_TIMER_TICKPOLICY_MERGE:
> case VIR_DOMAIN_TIMER_TICKPOLICY_DISCARD:
> + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM_PIT_TICK_POLICY))
> + virCommandAddArgList(cmd, "-global",
> + "kvm-pit.lost_tick_policy=discard", NULL);
> + else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NO_KVM_PIT))
> + virCommandAddArg(cmd, "-no-kvm-pit-reinjection");
> + break;
> + case VIR_DOMAIN_TIMER_TICKPOLICY_MERGE:
> /* no way to support these modes for pit in qemu */
s/these modes/this mode/
ACK w/ these adjustments (I can do this as well if you want)
John
> virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> _("unsupported pit tickpolicy '%s'"),
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-kvm-pit-device.xml b/tests/qemuxml2argvdata/qemuxml2argv-kvm-pit-device.xml
> index 7835a1b..d8ddcba 100644
> --- a/tests/qemuxml2argvdata/qemuxml2argv-kvm-pit-device.xml
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-kvm-pit-device.xml
> @@ -9,7 +9,7 @@
> <boot dev='hd'/>
> </os>
> <clock offset='utc'>
> - <timer name='pit' tickpolicy='delay'/>
> + <timer name='pit' tickpolicy='discard'/>
> </clock>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> index b8619dd..713a8fe 100644
> --- a/tests/qemuxml2argvtest.c
> +++ b/tests/qemuxml2argvtest.c
> @@ -2060,6 +2060,7 @@ mymain(void)
> qemuTestSetHostArch(driver.caps, VIR_ARCH_NONE);
>
> DO_TEST("kvm-pit-delay", QEMU_CAPS_KVM_PIT_TICK_POLICY);
> + DO_TEST("kvm-pit-device", QEMU_CAPS_KVM_PIT_TICK_POLICY);
>
> DO_TEST("panic", QEMU_CAPS_DEVICE_PANIC,
> QEMU_CAPS_NODEFCONFIG);
>
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