[Bug 1871267] Re: Multiple (Repeating) Keystrokes in macOS

[Alex]

Issues with time emulation. MacOS runs on qemu with a specific cpu option: -cpu 
Penryn,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on.
The code of cpu_x86_cpuid has no handler for 0x40000010, so vmware-cpuid-freq 
is ignored.
Another solution is to modify tsc_increment_by_tick value in 
MSR_IA32_PERF_STATUS returned from helper_rdmsr. Currently it is val = 1000ULL. 
Try to set it to 2000ULL, and see what happens.

The solution for hardware emulation is to return real hardware values to
the guest. I think for tcg it can be passed from command line, so the
user can adjust it's value.

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https://bugs.launchpad.net/bugs/1871267

Title:
  Multiple (Repeating) Keystrokes in macOS

Status in QEMU:
  New

Bug description:
  Hi,

  I am finding this issue with v4.2.0, or the latest master - on a
  Windows host, with macOS guest. It happens using gtk (SPICE?) or VNC.
  When I get to a place to enter a keystroke, I quite reliably get
  multiple of the same key (i.e. press A, get AAAA).

  Thinking there may be a basic setting to address this? I did try it in
  Linux (kvm), no issue there.

  Thanks!

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