Hi Stefano,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on nf-next/master]
[cannot apply to v5.4 next-20191125]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Stefano-Brivio/nftables-Set-implementation-for-arbitrary-concatenation-of-ranges/20191124-205742
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   net/netfilter/nft_set_pipapo_avx2.c: Assembler messages:
>> net/netfilter/nft_set_pipapo_avx2.c:80: Error: bad register name `%ymm15'
   net/netfilter/nft_set_pipapo_avx2.c:253: Error: bad register name `%ymm15'
   net/netfilter/nft_set_pipapo_avx2.c:332: Error: bad register name `%ymm15'
>> net/netfilter/nft_set_pipapo_avx2.c:382: Error: bad register name `%ymm8'
>> net/netfilter/nft_set_pipapo_avx2.c:383: Error: bad register name `%ymm9'
>> net/netfilter/nft_set_pipapo_avx2.c:384: Error: bad register name `%ymm10'
>> net/netfilter/nft_set_pipapo_avx2.c:385: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:386: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:387: Error: bad register name `%ymm10'
>> net/netfilter/nft_set_pipapo_avx2.c:390: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:403: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:404: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:405: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:406: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:407: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:408: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:409: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:412: Error: bad register name `%ymm12'
>> net/netfilter/nft_set_pipapo_avx2.c:413: Error: bad register name `%ymm14'
   net/netfilter/nft_set_pipapo_avx2.c:429: Error: bad register name `%ymm15'
   net/netfilter/nft_set_pipapo_avx2.c:487: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:488: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:489: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:490: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:491: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:492: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:493: Error: bad register name `%ymm14'
   net/netfilter/nft_set_pipapo_avx2.c:495: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:497: Error: bad register name `%ymm11'
>> net/netfilter/nft_set_pipapo_avx2.c:499: Error: bad register name `%ymm13'
   net/netfilter/nft_set_pipapo_avx2.c:506: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:508: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:509: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:520: Error: bad register name `%ymm15'
   net/netfilter/nft_set_pipapo_avx2.c:583: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:584: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:585: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:586: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:587: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:588: Error: bad register name `%ymm13'
   net/netfilter/nft_set_pipapo_avx2.c:589: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:592: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:595: Error: bad register name `%ymm13'
   net/netfilter/nft_set_pipapo_avx2.c:599: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:600: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:601: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:602: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:603: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:604: Error: bad register name `%ymm13'
   net/netfilter/nft_set_pipapo_avx2.c:605: Error: bad register name `%ymm14'
   net/netfilter/nft_set_pipapo_avx2.c:607: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:609: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:611: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:613: Error: bad register name `%ymm14'
   net/netfilter/nft_set_pipapo_avx2.c:615: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:616: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:617: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:618: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:619: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:620: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:622: Error: bad register name `%ymm14'
   net/netfilter/nft_set_pipapo_avx2.c:624: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:625: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:627: Error: bad register name `%ymm13'
   net/netfilter/nft_set_pipapo_avx2.c:631: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:632: Error: bad register name `%ymm9'
   net/netfilter/nft_set_pipapo_avx2.c:633: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:634: Error: bad register name `%ymm11'
   net/netfilter/nft_set_pipapo_avx2.c:635: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:638: Error: bad register name `%ymm8'
   net/netfilter/nft_set_pipapo_avx2.c:639: Error: bad register name `%ymm10'
   net/netfilter/nft_set_pipapo_avx2.c:640: Error: bad register name `%ymm12'
   net/netfilter/nft_set_pipapo_avx2.c:658: Error: bad register name `%ymm15'

vim +80 net/netfilter/nft_set_pipapo_avx2.c

    71	
    72	/**
    73	 * nft_pipapo_avx2_prepare() - Prepare before main algorithm body
    74	 *
    75	 * This zeroes out ymm15, which is later used whenever we need to clear a
    76	 * memory location, by storing its content into memory.
    77	 */
    78	static void nft_pipapo_avx2_prepare(void)
    79	{
  > 80		NFT_PIPAPO_AVX2_ZERO(15);
    81	}
    82	

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