kernel panic during kernel module load (powerpc specific part)
benh at kernel.crashing.org
Wed Jun 6 08:14:55 EST 2012
On Tue, 2012-06-05 at 13:32 +0200, Gabriel Paubert wrote:
> - gcc-4.6 and gcc-4.7 behave identically, if -Os is set, they
> generate by default lmw/stmw. But if I combine -Os with
> -mno-multiple, they call the helper functions.
> In other words, on this system, gcc-4.4 is broken but should not
> cause any harm. gcc-4.6 and gcc-4.7 look correct, but are there
> any processors on which -mno-multiple is worth setting?
It could be an artifact of the -mtune we use, dunno. And yes, I'm pretty
sure some embedded processors don't like multiple load/store.
More information about the Linuxppc-dev