id = 2403
title = "WHPX accelerator fails to boot guest Windows 7"
state = "opened"
created_at = "2024-06-21T12:38:27.774Z"
closed_at = "n/a"
labels = ["accel: WHPX", "kind::Bug", "target: i386"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2403"
host-os = "Windows 11 23H2"
host-arch = "x64"
qemu-version = "v9.0.0-12054-g923cf646f4"
guest-os = "Windows 7"
guest-arch = "x64"
description = """I get Qemu freezed on Starting Windows screen when trying to boot Windows 7 Professional"""
reproduce = """1. Run qemu with the above command line and until Starting Windows screen appears.
2. See qemu freezed."""
additional = """tcg accelerator works ok, though (Windows 7 successfully boots as expected on native hardware):

- `qemu-system-x86_64.exe -accel tcg -cpu Westmere,aes=on,avx=on,sse4.1=on,sse4.2=on,ssse3=on,x2apic=on,xsave=on -m 4G -machine q35 -device qxl-vga,vgamem_mb=64 -hda Windows7_Disk.qcow2 -boot d -cdrom Windows7.iso`

  This bug seems to have the same roots: https://gitlab.com/qemu-project/qemu/-/issues/1859

  ![Capture.PNG](/uploads/f934e620a4b3c157fc34e8ff38470a0b/Capture.PNG){width=579 height=477}"""