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Date:   Tue, 11 Sep 2018 21:17:02 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, "Jason A. Donenfeld" <Jason@...c4.com>
Subject: Re: [PATCH net-next v3 17/17] net: WireGuard secure network tunnel

Hi Jason,

I love your patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Jason-A-Donenfeld/WireGuard-Secure-Network-Tunnel/20180911-185037
config: arm-at91_dt_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/vfp/vfphw.S: Assembler messages:
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c0' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c1' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c2' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c3' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c4' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c5' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c6' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c7' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c8' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c9' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c10' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c11' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c12' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c13' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c14' in ARM mode
>> arch/arm/vfp/vfphw.S:299: Error: selected processor does not support `mrrc p11,3,r0,r1,c15' in ARM mode
>> arch/arm/vfp/vfphw.S:321: Error: selected processor does not support `mcrr p11,3,r0,r1,c0' in ARM mode
>> arch/arm/vfp/vfphw.S:321: Error: selected processor does not support `mcrr p11,3,r0,r1,c1' in ARM mode
>> arch/arm/vfp/vfphw.S:321: Error: selected processor does not support `mcrr p11,3,r0,r1,c2' in ARM mode
>> arch/arm/vfp/vfphw.S:321: Error: selected processor does not support `mcrr p11,3,r0,r1,c3' in ARM mode

vim +299 arch/arm/vfp/vfphw.S

^1da177e Linus Torvalds  2005-04-16  285  
93ed3970 Catalin Marinas 2008-08-28  286  ENTRY(vfp_get_double)
07f33a03 Catalin Marinas 2009-07-24  287  	tbl_branch r0, r3, #3
^1da177e Linus Torvalds  2005-04-16  288  	.irp	dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
07f33a03 Catalin Marinas 2009-07-24  289  1:	fmrrd	r0, r1, d\dr
6ebbf2ce Russell King    2014-06-30  290  	ret	lr
07f33a03 Catalin Marinas 2009-07-24  291  	.org	1b + 8
^1da177e Linus Torvalds  2005-04-16  292  	.endr
25ebee02 Catalin Marinas 2007-09-25  293  #ifdef CONFIG_VFPv3
25ebee02 Catalin Marinas 2007-09-25  294  	@ d16 - d31 registers
25ebee02 Catalin Marinas 2007-09-25  295  	.irp	dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
07f33a03 Catalin Marinas 2009-07-24  296  1:	mrrc	p11, 3, r0, r1, c\dr	@ fmrrd	r0, r1, d\dr
6ebbf2ce Russell King    2014-06-30  297  	ret	lr
07f33a03 Catalin Marinas 2009-07-24  298  	.org	1b + 8
25ebee02 Catalin Marinas 2007-09-25 @299  	.endr
25ebee02 Catalin Marinas 2007-09-25  300  #endif
^1da177e Linus Torvalds  2005-04-16  301  
25ebee02 Catalin Marinas 2007-09-25  302  	@ virtual register 16 (or 32 if VFPv3) for compare with zero
^1da177e Linus Torvalds  2005-04-16  303  	mov	r0, #0
^1da177e Linus Torvalds  2005-04-16  304  	mov	r1, #0
6ebbf2ce Russell King    2014-06-30  305  	ret	lr
93ed3970 Catalin Marinas 2008-08-28  306  ENDPROC(vfp_get_double)
^1da177e Linus Torvalds  2005-04-16  307  
93ed3970 Catalin Marinas 2008-08-28  308  ENTRY(vfp_put_double)
07f33a03 Catalin Marinas 2009-07-24  309  	tbl_branch r2, r3, #3
^1da177e Linus Torvalds  2005-04-16  310  	.irp	dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
07f33a03 Catalin Marinas 2009-07-24  311  1:	fmdrr	d\dr, r0, r1
6ebbf2ce Russell King    2014-06-30  312  	ret	lr
07f33a03 Catalin Marinas 2009-07-24  313  	.org	1b + 8
^1da177e Linus Torvalds  2005-04-16  314  	.endr
25ebee02 Catalin Marinas 2007-09-25  315  #ifdef CONFIG_VFPv3
25ebee02 Catalin Marinas 2007-09-25  316  	@ d16 - d31 registers
25ebee02 Catalin Marinas 2007-09-25  317  	.irp	dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
138de1c4 Russell King    2010-05-27  318  1:	mcrr	p11, 3, r0, r1, c\dr	@ fmdrr	r0, r1, d\dr
6ebbf2ce Russell King    2014-06-30  319  	ret	lr
07f33a03 Catalin Marinas 2009-07-24  320  	.org	1b + 8
25ebee02 Catalin Marinas 2007-09-25 @321  	.endr

:::::: The code at line 299 was first introduced by commit
:::::: 25ebee020bd34d1f4c5678538204f0b10bf9f6d5 [ARM] 4583/1: ARMv7: Add VFPv3 support

:::::: TO: Catalin Marinas <catalin.marinas@....com>
:::::: CC: Russell King <rmk+kernel@....linux.org.uk>

---
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