Thanks for the clarification! I will fix the divisions.
On 6/26/17, 5:12 AM, "David Sterba" <dste...@suse.cz> wrote:
On Sun, Jun 25, 2017 at 11:30:22PM +0200, Adam Borowski wrote:
> On Mon, Jun 26, 2017 at 03:03:17AM +0800, kbuild test robot wrote:
> > Hi Nick,
> >
> > url:
https://github.com/0day-ci/linux/commits/Nick-Terrell/lib-Add-xxhash-module/20170625-214344
> > config: i386-allmodconfig (attached as .config)
> > compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> > reproduce:
> > # save the attached .config to linux build tree
> > make ARCH=i386
> >
> > All errors (new ones prefixed by >>):
> >
> > >> ERROR: "__udivdi3" [lib/zstd/zstd_compress.ko] undefined!
> > ERROR: "__udivdi3" [fs/ufs/ufs.ko] undefined!
>
> Just to save you time to figure it out:
> for division when one or both arguments are longer than the architecture's
> word, gcc uses helper functions that are included when compiling in a
hosted
> environment -- but not in freestanding.
>
> Thus, you want do_div() instead of /; do check widths and signedness of
> arguments.
No do_div please, div_u64 or div64_u64.
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