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[Qemu-devel] [Bug 1778966] Re: Windows 1803 and later crashes on KVM

From: Daniel Berrange
Subject: [Qemu-devel] [Bug 1778966] Re: Windows 1803 and later crashes on KVM
Date: Wed, 27 Jun 2018 22:14:44 -0000

This sounds like the same problem we're investigating in Fedora/RHEL
land affecting guests with EPYC CPU, or host-passthrough from an EPYC
family 17h host.  Workaround should be to use "-cpu Opteron_G5" for now


Looks like windows is tickling an undocumented MSR and we're trying to
find out what this MSR is supposed todo and thus how to handle it in

** Bug watch added: Red Hat Bugzilla #1592276

** Bug watch added: Red Hat Bugzilla #1593190

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  Windows 1803 and later crashes on KVM

Status in QEMU:

Bug description:
  For a bionic host, using the current public kvm modules, KVM is not
  capable of booting a WindowsInsider or msdn Windows 1803 Windows
  Server iso. In snstalling from an ISO from a started windows 2016
  guest results in an unbootable and unrepairable guest.

  The hardware is a threadripper 1920x with 32GB of main memory, disk
  mydigital BPX SSD and WD based 4 column RAID 5 via mdadm.

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