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[Qemu-devel] [Bug 1798451] Re: MMX emulation is missing on HVF Accelerat

From: Rob Maskell
Subject: [Qemu-devel] [Bug 1798451] Re: MMX emulation is missing on HVF Acceleration
Date: Wed, 26 Dec 2018 22:50:15 -0000

Still an issue on 3.1.0 and now Mojave

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  MMX emulation is missing on HVF Acceleration

Status in QEMU:

Bug description:
  Robs-MacBook-Pro-2:~ robmaskell$ qemu-system-x86_64 --version
  QEMU emulator version 3.0.0

  Host: MacOS - 10.13.6
    Model Name: MacBook Pro
    Model Identifier:   MacBookPro14,3
    Processor Name:     Intel Core i7
    Processor Speed:    2.8 GHz
    Number of Processors:       1
    Total Number of Cores:      4
    L2 Cache (per Core):        256 KB
    L3 Cache:   6 MB
    Memory:     16 GB

  Guest OS: Elementary Linux Loki 0.4.1, patched up to date

  Command used to start QEMU:

  qemu-system-x86_64 \
    -name ElementaryLokiDev \
    -machine pc,accel=hvf \
    -cpu max \
    -smp cpus=2,sockets=2,cores=1,threads=1,maxcpus=2 \
    -numa node,nodeid=0 \
    -numa cpu,node-id=0,socket-id=0 -numa cpu,node-id=0,socket-id=1 \
    -m 8G \
    -vga vmware \
    -hda e4.qcow2

  Symptoms: Started without the -smp / -numa commands to install the OS,
  then added -smp / -numa and the machine boots and lscpu reports extra
  cpu as expected. Restart VM and it hangs on startup. Remove -smp /
  -numa and machine starts again.

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