Re: [Qemu-devel] [qemu-s390x] [PATCH v5 06/12] s390-ccw: parse and set boot menu options

[Thomas Huth <thuth@redhat.com>]

On 14.02.2018 18:46, Collin L. Walling wrote:
> I'm beginning to like the usage of splash-time to represent a timeout
> for the boot menu
> less and less.  It is really meant for how long a _splash_ _image_
> should appear during boot.
> 
> I'd like to suggest adding a new boot option "menu-timeout".  An
> alternative would be
> documenting in qemu-options.hx that s390 treats "splash-time" as the
> menu-timeout.
> 
> Thoughts?

I think you should keep splash-time and not introduce a new option.
Libvirt seems to map the timeout from <bootmenu enable='yes'
timeout='X'/> to the splash-time option, and according to the libvirt
documentation: "Additional attribute timeout takes the number of
milliseconds the boot menu should wait until it times out."

So it seems like splash-time is already expected to define the amount of
time for the boot menu. We should not confuse libvirt or the users by
introducing yet another option here.

 Thomas


> On 02/05/2018 03:57 PM, Collin L. Walling wrote:
>> Set boot menu options for an s390 guest and store them in
>> the iplb. These options are set via the QEMU command line
>> option:
>>
>>      -boot menu=on|off[,splash-time=X]
>>
>> or via the libvirt domain xml:
>>
>>      <os>
>>        <bootmenu enable='yes|no' timeout='X'/>
>>      </os>
>>
>> Where X represents some positive integer representing
>> milliseconds.
>>
>> Any value set for loadparm will override all boot menu options.
>> If loadparm=PROMPT, then the menu will be enabled without a
>> timeout.
>>
>> The absence of any boot options on the command line will flag
>> to later use the zipl boot loader values.
>>
>> Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com>
>> Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
>> Reviewed-by: Thomas Huth <thuth@redhat.com>
>> ---
>> [...]