This is just a quick email to summarise a discussion on IRC. QEMU on ARM hosts (not ARM guests!) is currently broken in at least the following ways: * configure will select the ucontext coroutine implementation but on ARM makecontext returns ENOSYS and we will abort() on startup * the fixed address we mmap the code gen buffer to in system mode tends to overlap the libc heap (at least on Ubuntu oneiric); when this happens you typically get a sysmalloc abort * there is a bug I have not investigated which causes an i386 guest image to loop infinitely resetting before it brings up the grub menu * the TCG_AREG0 is r7, which clashes with the Thumb frame pointer, with the effect that --enable-debug fails to compile
ARM host support for TCG is not a very high priority for me and I don't expect to fix any of these before 1.0 is released. I'm happy to test patches if anybody else wishes to write them :-) -- PMM
