[Qemu-devel] [Bug 1792193] Re: AMD Athlon(tm) X2 Dual-Core QL-64 bug

[Dr. David Alan Gilbert]

Hi Kirill,
  That's a bit tricky to debug; could you build qemu from git and try and 
bisect between 2.12.0 and 3.0 to see which commit broke it?

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https://bugs.launchpad.net/bugs/1792193

Title:
  AMD Athlon(tm) X2 Dual-Core QL-64 bug

Status in QEMU:
  New

Bug description:
  I upgrade my qemu 2.12.0-2 => 3.0.0-1. After that I can't load virtual 
machine with "-cpu host" option. Full command line is
  qemu-system-x86_64 \
        -monitor stdio \
        -enable-kvm \
        -cpu host \
        -smp cpus=2 \
        -m 1G \
        -vga virtio \
        -display gtk,gl=on \
        -soundhw ac97 \
        -drive 
file=/ehdd/qemu/arch_hw_12_08_2018/arch_shrinked.raw,format=raw,if=virtio
  I have Arch Linux on virtual machine. When I start QEMU, GRUB tries to load 
initial ramdisk and stops. System doesn't load. If I try to start virtual 
machine with "-cpu athlon" option then get the same bug.
  I downgrade back to qemu 2.12.0-2 and virtual machine works fine, system 
loads.
  My processor is AMD Athlon(tm) X2 Dual-Core QL-64.

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