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

[Launchpad Bug Tracker]

This bug was fixed in the package s390-tools - 2.12.0-0ubuntu3.1

---------------
s390-tools (2.12.0-0ubuntu3.1) focal; urgency=medium

  * debian/patches/0082-*.patch .. 0111-*.patch (LP: #1892350)
    - Cherrypick patches from upstream, to make zipl boot loader check for
      secure IPL feature before looking up data
    - Cherrypick 0111-*/fd81728 ("zipl: fix incorrect setup of stage3 flags")
      additionally, to fix bug in 0089-*/6c04f97 ("zipl: consolidate
      stage3_params structs and stage3 flags")
  * d/p/0110-zipl-stage3-correctly-handle-diag308-response-code.patch
    - Cherrypick 943c5dc ("zipl/stage3: correctly handle diag308 response
      code"), to fix KVM IPL without bootindex= specified (LP: #1888231)
  * d/p/0112-cpumf-lscpumf.pl-displays-raw-event-number-incorrect.patch
    - Only needed for perl lscpumf in Focal (LP: #1893027)

 -- Lukas Märdian <lukas.maerdian at canonical.com>  Thu, 01 Oct 2020
12:41:35 +0200

** Changed in: s390-tools (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1888231

Title:
  [UBUNTU 20.04] zipl: Fix KVM IPL without bootindex

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in s390-tools package in Ubuntu:
  Fix Released
Status in s390-tools source package in Focal:
  Fix Released
Status in s390-tools source package in Groovy:
  Fix Released

Bug description:
  [Impact] 
   * Without bootindex specified there is no IPL parmblock on KVM which can be read by the stage3 loader.
   * Backported to allow IBM Z users to boot KVM machines without secure initial program loader (IPL) data and without bootindex= parameter specified

  [Test Case]
   * prepare a new non-secure IPL and try booting via this IPL, without specifying the bootindex= parameter
   * check if stage3 loader runs successfully

  [Regression Potential]

   * regressions in zipl/stage3 could break newly created IPLs
   * If an IPL is broken, the boot sequence on IBM Z machines could not work
   * the package is only available on s390x and thus could only affects IBM Z machines
   * Existing boot devices / IPLs would not be affected

  [Other Info]
   * Needs to be tested/verified by IBM internally
   * Patch is included in upstream 2.14.0 release
   * Related to LP: #1892350 and LP: #1893027

  === Original Description ===
  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.

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