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[Qemu-devel] [Bug 1552549] Re: qemu-system-i386 verison 2.5.50 fails at

From: Thomas Huth
Subject: [Qemu-devel] [Bug 1552549] Re: qemu-system-i386 verison 2.5.50 fails at lmsw instruction
Date: Fri, 22 Feb 2019 10:30:48 -0000

Looking through old bug tickets... can you still reproduce this issue
with the latest version of QEMU? Or could we close this ticket nowadays?
If not, can you provide an example for testing?

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

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  qemu-system-i386 verison 2.5.50 fails at lmsw instruction

Status in QEMU:

Bug description:
  I cloned qemu source code from github.com, and compiled it on my
  Kubuntu 15.10 laptop to run my little OS. When booting my little OS,
  the virtual machine's screen keep blinking, I guess it's the virtual
  machine rebooting on and on automatically for some unknown reason, but
  there is no further information shown on Kubuntu's terminal. I'm
  pretty sure this problem is not caused by my little OS, because it
  works just fine in qemu-system-i386 version 2.5.0.

  I debugged my OS and find this problem happens when executing
  instruction "lmsw ax". Is this a bug, can anyone help me out?

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