[Qemu-devel] [Bug 1469342] Re: qemu-i386 pentium3/athlon incorrect instruction set

[Paolo Bonzini]

QEMU doesn't try to mimic the exact set of instructions for a processor,
unfortunately. Virtualization solutions like KVM also do not allow you
to do that, so the case for this feature is relatively minor.

However, patches are welcome.

** Changed in: qemu
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1469342

Title:
  qemu-i386 pentium3/athlon incorrect instruction set

Status in QEMU:
  Won't Fix

Bug description:
  Running a binary containing a movsd instruction (SSE2) in 32-bit
  qemu-i386 from 20150609 using the -cpu pentium3 switch results in
  flawless execution whereas it should crash with SIGILL as P3 only had
  SSE and not SSE2.

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