[Bug 1888231] [NEW] [UBUNTU 20.04] zipl: Fix KVM IPL without bootindex

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Description:   zipl: Fix KVM IPL without bootindex
Symptom:       Failed IPL on KVM when no bootindex is specified.
Problem:       Without bootindex specified there is no IPL parmblock
               on KVM which can be read by the stage3 loader.
Solution:      In case diag308 gives a response code 0x102 the stage3
               loader can safely assume that no secure IPL is required
               since no IPL report block exists.
Reproduction:  IPL on KVM without 'bootindex=' attached.
Upstream-ID:   c9066bf5497300db5e0ba11bf111683ea225d8c8
               b7f1977d3f9332f82e7f388fb18076b89b83944e

Component:     s390-tools 2.14

Should also be integrated into 20.04, where secure boot is enabled.

** Affects: s390-tools (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bugnameltc-186967 severity-high targetmilestone-inin2010
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[UBUNTU 20.04] zipl: Fix KVM IPL without bootindex
https://bugs.launchpad.net/bugs/1888231
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