mysterious double fault

hi all,

i have a mysterious double fault error while booting fiasco in qemu. the problem is that the same configuration works on a native 586 fiasco and in fiasco-ux without any problems. only with qemu a double fault is detected.

i tested it with qemu 0.9.0 and qemu 0.9.1. with version 0.9.0 the boot process hangs, without any error messages. with qemu 0.9.1 fiasco says that a double fault was detected.

in my configuration i boot two instances of l4linux. while the intialization of the l4linux kernel, fiasco produces the following output: DOUBLE FAULT! EAX=c02407d0 ESI=c0240000 DS=0023 EBX=c0401000 EDI=00000000 ES=0023 ECX=3fe19000 EBP=c02406b4 GS=0043 EDX=00000000 ESP=c04017cc SS=0010 ESP0=c0240800 EFL=00200087 EIP=f002ef06 CS=0008

this happens always after the "l4lx | Got 0 out of 65536 I/O ports" message. but the really confusing thing is, that sometimes also qemu can boot without any double fault.

any ideas whats going wrong here?

thanks alex