Commit-ID: 80375980f1608f43b47abc2671456b23ec68c434 Gitweb: http://git.kernel.org/tip/80375980f1608f43b47abc2671456b23ec68c434 Author: Joe Mario <jma...@redhat.com> AuthorDate: Sat, 8 Feb 2014 09:01:09 +0100 Committer: H. Peter Anvin <h...@linux.intel.com> CommitDate: Thu, 13 Feb 2014 20:24:50 -0800
lto: Handle LTO common symbols in module loader Here is the workaround I made for having the kernel not reject modules built with -flto. The clean solution would be to get the compiler to not emit the symbol. Or if it has to emit the symbol, then emit it as initialized data but put it into a comdat/linkonce section. Minor tweaks by AK over Joe's patch. Cc: Rusty Russell <ru...@rustcorp.com.au> Signed-off-by: Andi Kleen <a...@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-5-git-send-email...@linux.intel.com Signed-off-by: H. Peter Anvin <h...@linux.intel.com> --- kernel/module.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/module.c b/kernel/module.c index d24fcf2..b99e801 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -1948,6 +1948,10 @@ static int simplify_symbols(struct module *mod, const struct load_info *info) switch (sym[i].st_shndx) { case SHN_COMMON: + /* Ignore common symbols */ + if (!strncmp(name, "__gnu_lto", 9)) + break; + /* We compiled with -fno-common. These are not supposed to happen. */ pr_debug("Common symbol: %s\n", name); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
