Bernhard Walle <bwalle at suse.de> writes: > * Eric W. Biederman [2008-04-28 10:55]: >> >> It is a different code path. It is designed to exercise the 16bit BIOS >> calls that the kernel uses with a lot of serial port debugging >> so we can see if that is the problem. > > Well, that gives me > ------------------------------------------------------------ > I'm in purgatory > kexec_test 20080324 starting... > eax: 00000000 ebx: 00000000 ecx: 00000000 edx: 00000000 > esi: 00000000 edi: 00000000 esp: 00008FF8 ebp: 00000000 > idt: 00000000 00000000 > gdt: 0000006F 00005BA0 > Switching descriptors. > Descriptors changed. > Legacy pic setup. > In real mode. > Interrupts enabled. > Base memory size: 0276 > A20 disabled. > E820 Memory Map. > 000000000009D800 @ 0000000000000000 type: 00000001 > 0000000000002800 @ 000 > ------------------------------------------------------------ > > Yes, the output stops here. Don't know why ... Ok. I'm guessing that whatever it is immediately after the e820 map dump causes the box to go south. But this is a very good clue that your BIOS just can't handle being run after the linux kernel has run at this point. Unfortunately this is common and why the --real-mode switch has not been the default for several years. What is your interest in getting the --real-mode option working at this point? After this point the debugging starts to get very laborious. Eric
