QEMU 0.12 is quite outdated nowadays ... can you still reproduce this issue with the latest version of QEMU (currently version 2.8)?
** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/622367 Title: No BIOS MPFP structure with smp=92 and more Status in QEMU: Incomplete Bug description: qemu 0.12.2, SeaBios 0.5.1, running qemu-system-x86_64.exe with option -smp. If smp>=92 then no MP floating point structure present in 1 Mb. This may be verified by pmemsave 0 0x100000 in debugger and search for _MP_ signature in file. qemu 0.10.5 (bios build 05/08/09) can smp=128 (and even 255 if not hangs :). Host win 7 x64 RTM 7600. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/622367/+subscriptions