On 10/5/15 7:38 AM, David Miller wrote:
From: kbuild test robot <lkp@xxxxxxxxx>
Date: Fri, 2 Oct 2015 14:20:30 +0800
Hi David,
[auto build test results on next-20151001 -- if it's inappropriate base, please ignore]
config: mips-nlm_xlp_defconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=mips
All warnings (new ones prefixed by >>):
mips-linux-gnu-ld: net/ipv4/.tmp_fib_semantics.o: warning: Inconsistent ISA between e_flags and .MIPS.abiflags
Frankly this looks like a build infrastructure or tools bug to me.
That's pretty much what I got back from Joshua on the linux-mips mailing
list when I inquired about why a code move generates the warning:
"Dunno if your patch generated the message per-say, but it seems some
platforms in the MIPS tree cause this message to appear. I.e., IP27 or
IP32 builds (or IP30 out-of-tree) don't emit this error, but building
IP28 systems in-tree will cause it to appear quite a bit.
The message itself, I believe is complaining that the stated CPU ISA
(mips1 ... mips4, mips32r2, r10000, etc) in one of the sections
(e.g.,.MIPS.abiflags) doesn't match the equivalent ISA value in the
other section (e.g., e_flags). I haven't seen any harmful side effects
of it myself. Seems to be more of a warning than anything else, and as
long as the ISA matches a supported CPU (e.g., r10000 is compatible with
mips4), it can be ignored. It does clutter up the build, though."
