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


From: PeteVine
Subject: [Qemu-devel] [Bug 1469342] Re: qemu-i386 pentium3/athlon incorrect instruction set
Date: Fri, 18 Sep 2015 13:34:56 -0000

I'm pretty sure you're right regarding entire instruction sets - but
surely simply disabling SSE2 is possible even now? (after all pentium2
and below doesn't have it)

That could solve this problem with a simple hack like, eg. :

pentium3 = $pentium3 - SSE2

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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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