[libvirt] [PATCH 5/6] qemu: Format nested-hv feature on the command line
Michal Privoznik
mprivozn at redhat.com
Mon Nov 26 15:21:09 UTC 2018
On 11/20/18 6:08 PM, Andrea Bolognani wrote:
> Signed-off-by: Andrea Bolognani <abologna at redhat.com>
> ---
> src/qemu/qemu_command.c | 20 ++++++++++++++++++++
> tests/qemuxml2argvdata/pseries-features.args | 2 +-
> 2 files changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 23a6661c10..315419c71b 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -7468,6 +7468,26 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
> virBufferAsprintf(&buf, ",cap-htm=%s", str);
> }
>
> + if (def->features[VIR_DOMAIN_FEATURE_NESTED_HV] != VIR_TRISTATE_SWITCH_ABSENT) {
> + const char *str;
> +
> + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV)) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("Nested HV configuration is not supported by "
> + "this QEMU binary"));
> + goto cleanup;
> + }
> +
> + str = virTristateSwitchTypeToString(def->features[VIR_DOMAIN_FEATURE_NESTED_HV]);
> + if (!str) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("Invalid setting for nested HV state"));
> + goto cleanup;
> + }
How can this be? The only possibility I see if
def->features[VIR_DOMAIN_FEATURE_NESTED_HV] wasn't 1 or 2. But then we
are in much bigger trouble anyway. I suggest removing it. We don't check
for the retval anywhere else.
> +
> + virBufferAsprintf(&buf, ",cap-nested-hv=%s", str);
> + }
> +
> if (cpu && cpu->model &&
> cpu->mode == VIR_CPU_MODE_HOST_MODEL &&
> qemuDomainIsPSeries(def) &&
> diff --git a/tests/qemuxml2argvdata/pseries-features.args b/tests/qemuxml2argvdata/pseries-features.args
> index 5d4b5ce930..0acab91c2a 100644
> --- a/tests/qemuxml2argvdata/pseries-features.args
> +++ b/tests/qemuxml2argvdata/pseries-features.args
> @@ -8,7 +8,7 @@ QEMU_AUDIO_DRV=none \
> -name guest \
> -S \
> -machine pseries,accel=tcg,usb=off,dump-guest-core=off,resize-hpt=required,\
> -cap-hpt-max-page-size=1048576k,cap-htm=on \
> +cap-hpt-max-page-size=1048576k,cap-htm=on,cap-nested-hv=off \
> -m 512 \
> -smp 1,sockets=1,cores=1,threads=1 \
> -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
>
Michal
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