On Thu, 2009-04-16 at 13:21 -0500, Kumar Gala wrote: > Ben, > > The following patch is causing me issues w/init SEGV on boot. This is > a pretty old version of init and I'm wondering what the commit you had > related to old ABI breakage:
Can you test if the binary is trying to execute something that is in a program section that isn't marked executable ? It could be that it's build with a very old and broken toolchains. (Note that when we finally add proper per-page exec permission support, this will -also- break there even if we avoid that test below). Maybe we can make a .config option for supporting obsolete crap that tries to execute out of non executable sections ? Cheers, Ben. > commit 8d30c14cab30d405a05f2aaceda1e9ad57800f36 > Author: Benjamin Herrenschmidt <b...@kernel.crashing.org> > Date: Tue Feb 10 16:02:37 2009 +0000 > > powerpc/mm: Rework I$/D$ coherency (v3) > > This patch reworks the way we do I and D cache coherency on > PowerPC. > > > --- > /* > * Allow execution from readable areas if the MMU > does not > * provide separate controls over reading and > executing. > + * > + * Note: That code used to not be enabled for 4xx/BookE. > + * It is now as I/D cache coherency for these is done at > + * set_pte_at() time and I see no reason why the test > + * below wouldn't be valid on those processors. This - > may- > + * break programs compiled with a really old ABI though. > */ > > - k _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
