I applied the patch manually on qemu releases 1.7.1 and 2.0.0. Configuration
* Host system is Lenovo ThinkPad T520 (windows 7) * qemu built with --disable-sdl and --disable-gtk * GCC version is 4.6.1 (MinGW win32) Test (same steps/results for both 1.7.1 and 2.0.0) * Created qcow2 disk image using qemu-img * Started qemu-system-i386 with new disk image and OpenBSD/i386 5.5 install ISO * Connected VM display using VNC * VM booted successfully and install script started * Install process too slow; gave up after >60 minutes Following the same testing steps against a qemu 1.5.1 binary, the OpenBSD 5.5 installation finished in 3 minutes on my system. I haven't tried to profile the code. - Michael On Tue, Jun 24, 2014 at 07:22:59AM +0200, Paolo Bonzini wrote: > Il 24/06/2014 03:41, Michael W. Bombardieri ha scritto: > >Hi, > > > >Thanks for adding me to this thread. > >I am not familiar with the qemu source code but I am aware > >of the coroutine crash and I can test a patch if you have > >one. > > > >qemu 1.5.1 was the last version I was able to build and use > >on win32. Later versions build without error but exhibit the > >coroutine crash. > >qemu binaries built with the coroutine feature disabled are > >to slow to use. > > Peter posted one here: > > http://article.gmane.org/gmane.comp.emulators.qemu/282189/raw > > Paolo >