QEMU

Incorrect order of task switching

  1. QEMU
  2. Bugs
  3. Bug #996798
Reported by Yury Popov on 2012-05-08
6
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Bug Description

In Intel specifications (http://download.intel.com/design/processor/manuals/253668.pdf 7.3), we can see:

    8. Saves the state of the current (old) task in the current task’s TSS.

…

   12. The TSS state is loaded into the processor

But, in QEMU code (https://raw.github.com/qemu/QEMU/v1.0/target-i386/op_helper.c :375), the order is reversed: TSS registers & segments loads BEFORE save old task state.

See original description
Yury Popov (8-phoenix) on 2012-05-09
description: updated
Yury Popov (8-phoenix) wrote :

Some bug in VirtualBox: https://www.virtualbox.org/ticket/10532

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