Re: [PATCH 0/4] sparc32: smp fixes

["Ludovic Courtès" <ludo@chbouib.org>]

Hi,

5 days, 2 hours, 52 minutes, 18 seconds ago, 
Ludovic Courtès wrote:
> Using GCC 3.4.6 (from Debian sid) fixes the problem.

Actually it doesn't.  For some reason, I now hit the following ICE with
3.4.6 (Debian's `gcc-3.4', version 3.4.6-2) systematically:

    CC      fs/proc/proc_misc.o
    CC      fs/dnotify.o
  distcc[13671] ERROR: compile /home/ludo/.ccache/proc_misc.tmp.cheetah.13656.i on localhost failed
  fs/proc/proc_misc.c: In function `uptime_read_proc':
  fs/proc/proc_misc.c:109: internal compiler error: in choose_multiplier, at expmed.c:2738
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <URL:http://gcc.gnu.org/bugs.html> for instructions.
  For Debian GNU/Linux specific bug reporting instructions,
  see <URL:file:///usr/share/doc/gcc-3.4/README.Bugs>.

I finally used 3.3.6 to built the whole kernel and I don't hit any ICE
there.  Is anybody building SPARC kernels with 3.4 or 4.x?

> However, the resulting kernel hangs right after the "Booting Linux..."
> message.

The kernel (once cleanly recompiled with 3.3.6) still hangs at the same
point, whether there are one or two CPUs in the machine.

I guess I should try to selectively revert some of the SMP patches in
order to try to find out what's causing this.  Any advice about how to
proceed?

Thanks,
Ludovic.