[Bug 1915063] Re: Windows 10 wil not install using qemu-system-x86_64

[Andy Whitcroft]

The commit in question is marked for stable:

  commit 841c2be09fe4f495fe5224952a419bd8c7e5b455
  Author: Maxim Levitsky <mlevitsk@redhat.com>
  Date:   Wed Jul 8 14:57:31 2020 +0300

    kvm: x86: replace kvm_spec_ctrl_test_value with runtime test on the host
    
    To avoid complex and in some cases incorrect logic in
    kvm_spec_ctrl_test_value, just try the guest's given value on the host
    processor instead, and if it doesn't #GP, allow the guest to set it.
    
    One such case is when host CPU supports STIBP mitigation
    but doesn't support IBRS (as is the case with some Zen2 AMD cpus),
    and in this case we were giving guest #GP when it tried to use STIBP
    
    The reason why can can do the host test is that IA32_SPEC_CTRL msr is
    passed to the guest, after the guest sets it to a non zero value
    for the first time (due to performance reasons),
    and as as result of this, it is pointless to emulate #GP condition on
    this first access, in a different way than what the host CPU does.
    
    This is based on a patch from Sean Christopherson, who suggested this idea.
    
    Fixes: 6441fa6178f5 ("KVM: x86: avoid incorrect writes to host 
MSR_IA32_SPEC_CTRL")
    Cc: stable@vger.kernel.org
    Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
    Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
    Message-Id: <20200708115731.180097-1-mlevitsk@redhat.com>
    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

It appears to be in `v5.4.102` which is currently queued up for the
cycle following the one just starting.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1915063

Title:
  Windows 10 wil not install using qemu-system-x86_64

Status in QEMU:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in linux-oem-5.10 package in Ubuntu:
  Fix Released
Status in linux-oem-5.6 package in Ubuntu:
  Confirmed
Status in qemu package in Ubuntu:
  Invalid

Bug description:
  Steps to reproduce
  install virt-manager and ovmf if nopt already there
  copy windows and virtio iso files to /var/lib/libvirt/images

  Use virt-manager from local machine to create your VMs with the disk, CPUs 
and memory required
      Select customize configuration then select OVMF(UEFI) instead of seabios
      set first CDROM to the windows installation iso (enable in boot options)
      add a second CDROM and load with the virtio iso
        change spice display to VNC

    Always get a security error from windows and it fails to launch the 
installer (works on RHEL and Fedora)
  I tried updating the qemu version from Focals 4.2 to Groovy 5.0 which was of 
no help
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistributionChannelDescriptor:
   # This is the distribution channel descriptor for the OEM CDs
   # For more information see 
http://wiki.ubuntu.com/DistributionChannelDescriptor
   
canonical-oem-sutton-focal-amd64-20201030-422+pc-sutton-bachman-focal-amd64+X00
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2021-01-20 (19 days ago)
  InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 
20201030-14:39
  MachineType: LENOVO 30E102Z
  NonfreeKernelModules: nvidia_modeset nvidia
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.6.0-1042-oem 
root=UUID=389cd165-fc52-4814-b837-a1090b9c2387 ro locale=en_US quiet splash 
vt.handoff=7
  ProcVersionSignature: Ubuntu 5.6.0-1042.46-oem 5.6.19
  RelatedPackageVersions:
   linux-restricted-modules-5.6.0-1042-oem N/A
   linux-backports-modules-5.6.0-1042-oem  N/A
   linux-firmware                          1.187.8
  RfKill:
   
  Tags:  focal
  Uname: Linux 5.6.0-1042-oem x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip docker kvm libvirt lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 07/29/2020
  dmi.bios.vendor: LENOVO
  dmi.bios.version: S07KT08A
  dmi.board.name: 1046
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.type: 3
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrS07KT08A:bd07/29/2020:svnLENOVO:pn30E102Z:pvrThinkStationP620:rvnLENOVO:rn1046:rvrNotDefined:cvnLENOVO:ct3:cvrNone:
  dmi.product.family: INVALID
  dmi.product.name: 30E102Z
  dmi.product.sku: LENOVO_MT_30E1_BU_Think_FM_ThinkStation P620
  dmi.product.version: ThinkStation P620
  dmi.sys.vendor: LENOVO

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1915063/+subscriptions