kexec --real-mode

Bernhard Walle bwalle at suse.de
Tue Apr 22 09:16:22 EDT 2008


Hi,

did anybody try the --real-mode option with current release? I tried it
on two machines, and on one machine it just reboots, on the other
machine it hangs.

I use

    kexec --serial=0x03f8 --serial-baud=57600 --console-serial \
    -l /boot/vmlinuz --initrd=/boot/initrd
    --append="root=/dev/sda7 console=ttyS0,57600" \
    -d

on serial console, it gives me

    Starting new kernel
    I'm in purgatory
    a
    b
    c
    d
    e
    f
    g
    h

So it gets until

    linux-entry16.S:

    191         movw    %cs, %ax
    192         movw    %ax, %ds
    193
    194 DEBUG_CHAR('h')
    195         /* Load the registers */
    196         movl    eax - entry16, %eax
    197         movl    ebx - entry16, %ebx
    198         movl    ecx - entry16, %ecx
    199         movl    edx - entry16, %edx

Any advise so far? :)


        Bernhard





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