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From: Jordan Williams <1894836@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1894836] Re: kernel panic using hvf with CPU passthrough
Date: Tue, 08 Sep 2020 13:06:28 -0000	[thread overview]
Message-ID: <159957038849.19229.6729401013611415072.launchpad@gac.canonical.com> (raw)
In-Reply-To: 159956768761.20174.3940381536855370035.malonedeb@gac.canonical.com

** Tags added: macos

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https://bugs.launchpad.net/bugs/1894836

Title:
  kernel panic using hvf with CPU passthrough

Status in QEMU:
  New

Bug description:
  Host Details
  QEMU 5.1 (Homebrew)
  macOS 10.15.6 Catalina
  Late 2014 iMac
  i5-4690 @ 3.5 GHz
  8 GB RAM

  Guest Details
  Ubuntu Desktop 20.04.1 Installer ISO

  Problem
  Whenever I boot with "-accel hvf -cpu host", the Ubuntu desktop installer will immediately crash with a kernel panic after the initial splash screen.
  See the attached picture of the kernel panic for more details.

  Steps to recreate
  From https://www.jwillikers.com/posts/virtualize_ubuntu_desktop_on_macos_with_qemu/

  1. Install QEMU with Homebrew.
  $ brew install qemu

  2. Create a qcow2 disk image to which to install.
  $ qemu-img create -f qcow2 ubuntu2004.qcow2 60G

  3. Download the ISO.
  $ curl -L -o ubuntu-20.04.1-desktop-amd64.iso https://releases.ubuntu.com/20.04/ubuntu-20.04.1-desktop-amd64.iso

  4. Run the installer in QEMU.
  $ qemu-system-x86_64 \
    -accel hvf \
    -cpu host \
    -smp 2 \
    -m 4G \
    -usb \
    -device usb-tablet \
    -vga virtio \
    -display default,show-cursor=on \
    -device virtio-net,netdev=vmnic -netdev user,id=vmnic \
    -audiodev coreaudio,id=snd0 \
    -device ich9-intel-hda -device hda-output,audiodev=snd0 \
    -cdrom ubuntu-20.04.1-desktop-amd64.iso \
    -drive file=ubuntu2004.qcow2,if=virtio

  Workaround
  Emulating the CPU with "-cpu qemu64" does not result in a kernel panic.

To manage notifications about this bug go to:
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  reply	other threads:[~2020-09-08 13:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-08 12:21 [Bug 1894836] [NEW] kernel panic using hvf with CPU passthrough Jordan Williams
2020-09-08 13:06 ` Jordan Williams [this message]
2020-11-14  3:43 ` [Bug 1894836] " Jessica Clarke
2020-11-17 22:11 ` Jordan Williams
2020-12-10  9:04 ` Thomas Huth

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