On Sun, Jan 22, 2012 at 10:15 PM, Jan Kiszka <jan.kis...@web.de> wrote: > On 2012-01-22 20:58, Francis Moreau wrote: >> On Sun, Jan 22, 2012 at 8:21 PM, Jan Kiszka <jan.kis...@web.de> wrote: >>> On 2012-01-22 20:16, Max Filippov wrote: >>>>> When stopping the guest with -S before it booted, gdb will interrupt it >>>>> while it is still in 16-bit real mode. Later on, when Linux runs, the >>>>> guest is in 64-bit protected mode. gdb is not prepared for such a >>>>> switch. All you can do: >>>> >>>> Try >>>> >>>> set arch i386:x86-64 >>>> >>>> in the GDB prompt. >>>> >>> >>> Won't help if gdb already connected in 16/32-bit before. >> >> Why not ? is it a gdb bug ? > > More than a bug, a deficit in the x86 target management of gdb. Requires > some work, but gdb people are at least aware of the issue. >
Thanks again for your help. -- Francis
