Hello Derek, FYI, my entry in menu.lst is Kernel /boot/vmlinuz-2.6.28 root=LABEL/12 rhgb console=ttyS0,115200n8 kgdboc=ttyS0,115200 Linux kernel comes from kernel.org. I see all of printk messages on the screen of gdb. Is this the one you want? If not, sorry for useless noise. -caz
-----Original Message----- From: Derek Atkins [mailto:[email protected]] Sent: Wednesday, April 29, 2009 7:26 AM To: Jason Wessel Cc: [email protected] Subject: Re: [Kgdb-bugreport] Is there a patch to regain fullkgdbfunctionalitywith 2.6.27? Jason Wessel <[email protected]> writes: >> I think that yes, it probably is compiled with CONFIG_SMP=y. That never >> used to be a problem before. Is it a problem now? Strangely I used >> the same .config to manually build the 2.2.7 kgdb git snapshot I pulled >> down and that kernel seems to run correctly. > > In the kernels I have tested, it seems to boot fine with CONFIG_SMP on > or off. The extended patch series does initialize the exception > handlers earlier than without the extended patch series. It is possible > that there may be additional logic added by the Fedora Kernel vs the > kernel.org kernel which is what kgdb and the extended kgdb patch set is > regression tested with. Well, I decided to ignore the Fedora kernel and just build your snapshot kernel. That boots. Unfortunately I still can't get it to work like the old kgdb -- I still can't get the kernel printk output messages through kgdb like I used to. But I need those in order to debug this bootup problem I'm having. I'm currently booting with: kgdb8250=ttyS0,115200 kgdbwait kgdbcon=ttyS0,115200 What am I missing to get the printk output to kgdb like I used to? > Jason. -derek -- 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 [email protected] PGP key available ---------------------------------------------------------------------------- -- Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
