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[Qemu-devel] [Bug 1196498] Re: Failed to create COM port in Windows Gues

From: Thomas Huth
Subject: [Qemu-devel] [Bug 1196498] Re: Failed to create COM port in Windows Guest VM
Date: Thu, 08 Feb 2018 18:19:17 -0000

Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?

** Changed in: qemu
       Status: New => Incomplete

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  Failed to create COM port in Windows Guest VM

Status in QEMU:

Bug description:

  Tried to establish virtual serial connection between two Windows Guest
  VMs(Windows 2008 Server).

  As it mentioned under the link,

  Started VM using the below command with serial device as TCP port.
  # qemu-system-x86_64 -smp 1 -enable-kvm -m 512 -boot c -serial 
tcp:,server,nowait -hda 

  And started WinDbg in the Windows VM, with serial port:COM1 and

  It throws the error "Could not start kernel debugging using
  com:port:COM1,baudrate:115200 parameters, Win32 error 0n2. The system
  cannot find the file specified."

  Checked under Device Manager and there is no COM1 port.
  Does the -serial tcp: creates COM1 port? I doubt.
  If no what are the parameters I should pass to WinDbg for serial port?

  Please help me how to solve this issue.


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