Thanks for porting the patch. This is the mailing thread I started back in 2010 with that patch: http://lists.gnu.org/archive/html/qemu-devel/2010-11/msg02497.html That thread has some problems noted.
Sadly, I did not have enough free time to investigate all the other places that should be fixed for proper fpip/etc. support. That patch seems to be related: https://patchwork.kernel.org/patch/871232/, but is kvm only. You could try contacting the person that did the patch for kvm. Nikita Skovoroda. 2013/6/29 Morten Shearman Kirkegaard <661...@bugs.launchpad.net>: > The bug is still present in the newly released QEMU-1.5.1. I've ported > Chalkerx's patch to this release as well. See attached patch. > > Is there a problem with this patch, since it has not been committed? > > // MOKI > > ** Patch added: "patch-qemu-1.5.1-fpip.diff" > > https://bugs.launchpad.net/qemu/+bug/661696/+attachment/3718352/+files/patch-qemu-1.5.1-fpip.diff -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/661696 Title: incomplete emulation of fstenv under TCG Status in QEMU: New Bug description: Steps to reproduce: 1) Install Windows (tried XP and 7) in qemu (tried qemu without kvm and qemu-kvm). 2) Get OllyDbg ( http://ollydbg.de/odbg200.zip ). 3) Use some Metasploit-encoded file, example included. It is not a virus! File was generated with Metasploit, command (if i remember it right): `msfpayload windows/exec cmd=notepad R | msfencode -e x86/shikata_ga_nai -t exe -o cmd_exec_notepad.shikata_ga_nai.exe`. 4) Launch the file under Windows in qemu, make sure it opens a notepad. 5) Open file under OllyDbg, run (F9) it there. It opens a notpad. Close OllyDbg. 6) Open file under OllyDbg, trace over (Ctrl+F12) it there. It fails with `Access violation when writing to [some address]`. Command: 316A 13, XOR DWORD PTR DS:[EDX+13],EBP Under native Windows, the trace over command works fine. Under VMware the trace works fine. Under VirtualBox it also fails (checked in the spring). $ qemu-kvm --version QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5), Copyright (c) 2003-2008 Fabrice Bellard To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/661696/+subscriptions