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Re: [Qemu-devel] [qemu-s390x] [PATCH v1 3/5] s390-ccw: parse and set boo

From: David Hildenbrand
Subject: Re: [Qemu-devel] [qemu-s390x] [PATCH v1 3/5] s390-ccw: parse and set boot menu options
Date: Thu, 30 Nov 2017 16:52:37 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 29.11.2017 23:33, Collin L. Walling wrote:
> On 11/29/2017 05:28 PM, David Hildenbrand wrote:
>> On 27.11.2017 21:55, 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.
>> Aren't this properties usually contained in the zIPL block? (e.g.
>> written and configured by zipl)
> I believe the timeout value is nestled in there somewhere, yes.
> However it was requested that we control the boot menu timeout value
> via the Qemu command line instead. :)

Wonder if it makes sense to always act like the zIPL loader (display
menu/timeout) but allow to overwrite it via cmd line.



David / dhildenb

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