[Kgdb-bugreport] Problem getting kgdb to read kernel symbols. addresses shifted?
warlord at MIT.EDU
Mon Oct 1 16:35:37 EDT 2007
Dave Anderson <anderson at redhat.com> writes:
> Configure the kernel with CONFIG_PHYSICAL_START less than
> or equal to CONFIG_PHYSICAL_ALIGN. Upon rebuilding my FC7
> kernel with CONFIG_PHYSICAL_START changed from 16MB to 1MB,
> with CONFIG_PHYSICAL_ALIGN left at 4MB, i.e.:
> The kernel gets compiled for, and runs at, a 4MB physical address:
> $ nm -Bn vmlinux | grep "^c04"
> c0400000 T _text
> c0400000 T startup_32
> c0401000 T startup_32_smp
> c0401080 t checkCPUtype
> c0401101 t is486
> Setting both of them to 0x400000 also works.
Indeed, it does. Thank you. Once I changed this, the new kernel
works great and the symbols map properly. yay. Now on to your
regularly-schedule debugging. :)
Thank you, Dave!
Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
Member, MIT Student Information Processing Board (SIPB)
URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH
warlord at MIT.EDU PGP key available
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