[Bug 1804961] Re: qemu-system-aarch64: Windows 10 ARM64 BSoD on boot while using virt-3.0

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to another 
system. For this we need to know which bugs are still valid and which could be 
closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state 
back to "New" within the next 60 days, otherwise this report will be marked as 
"Expired". Or mark it as "Fix Released" if the problem has been solved with a 
newer version of QEMU already. Thank you and sorry for the inconvenience.

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1804961

Title:
  qemu-system-aarch64: Windows 10 ARM64 BSoD on boot while using
  virt-3.0

Status in QEMU:
  Incomplete

Bug description:
  When I emulate a virt-3.0 machine, Windows 10 BSoD on boot, with the
  error code being ACPI_BIOS_ERROR(0x000000A5), virt-2.12 boots fine.

  Windows Build: 10.0.17134.1
  QEMU version: 3.0.0
  Commandline: qemu-system-aarch64 -M virt -accel tcg,thread=multi -cpu 
cortex-a57 -smp 2 -m 2048 -bios QEMU_EFI.fd -device ramfb -device nec-usb-xhci 
-device usb-kbd -device usb-tablet -hda disk.vhd -vnc :0

  By the way, the patch to add DBG2 table discussed here
  https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg01719.html
  works (although minor change is required to adapt to the qemu 3.0.0
  code), the table is accepted by Windows (Windows require both DBG2 and
  SPCR to be valid for serial kernel debugging to work), so it may help
  further diagnosing this issue.

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