linux-kernel - arch/xtensa/include/asm/initialize_mmu.h:55: Error: invalid register 'atomctl' for 'wsr' instruction

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Message-ID: <201607221826.7SNz0708%fengguang.wu@intel.com>
Date:	Fri, 22 Jul 2016 18:32:28 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Chris Zankel <chris@...kel.net>,
	Max Filippov <jcmvbkbc@...il.com>
Subject: arch/xtensa/include/asm/initialize_mmu.h:55: Error: invalid register
 'atomctl' for 'wsr' instruction

Hi,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   47ef4ad2684d380dd6d596140fb79395115c3950
commit: 9da8320bb97768e35f2e64fa7642015271d672eb xtensa: add test_kc705_hifi variant
date:   4 months ago
config: xtensa-audio_kc705_defconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
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
        git checkout 9da8320bb97768e35f2e64fa7642015271d672eb
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   arch/xtensa/include/asm/initialize_mmu.h: Assembler messages:
>> arch/xtensa/include/asm/initialize_mmu.h:55: Error: invalid register 'atomctl' for 'wsr' instruction
--
   arch/xtensa/kernel/coprocessor.S: Assembler messages:
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_ovf_sar'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_bithead'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_ts_fts_bu_bp'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_cw_sd_no'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_cbegin0'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'rur.ae_cend0'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'
>> arch/xtensa/kernel/coprocessor.S:93: Error: unknown opcode or format name 'ae_s64.i'

vim +55 arch/xtensa/include/asm/initialize_mmu.h

6cb97111 Baruch Siach 2013-12-29  39  
c622b29d Max Filippov 2012-11-19  40  #ifdef __ASSEMBLY__
c622b29d Max Filippov 2012-11-19  41  
c622b29d Max Filippov 2012-11-19  42  #define XTENSA_HWVERSION_RC_2009_0 230000
c622b29d Max Filippov 2012-11-19  43  
c622b29d Max Filippov 2012-11-19  44  	.macro	initialize_mmu
c622b29d Max Filippov 2012-11-19  45  
c622b29d Max Filippov 2012-11-19  46  #if XCHAL_HAVE_S32C1I && (XCHAL_HW_MIN_VERSION >= XTENSA_HWVERSION_RC_2009_0)
c622b29d Max Filippov 2012-11-19  47  /*
c622b29d Max Filippov 2012-11-19  48   * We Have Atomic Operation Control (ATOMCTL) Register; Initialize it.
c622b29d Max Filippov 2012-11-19  49   * For details see Documentation/xtensa/atomctl.txt
c622b29d Max Filippov 2012-11-19  50   */
c622b29d Max Filippov 2012-11-19  51  #if XCHAL_DCACHE_IS_COHERENT
c622b29d Max Filippov 2012-11-19  52  	movi	a3, 0x25	/* For SMP/MX -- internal for writeback,
c622b29d Max Filippov 2012-11-19  53  				 * RCW otherwise
c622b29d Max Filippov 2012-11-19  54  				 */
c622b29d Max Filippov 2012-11-19 @55  #else
c622b29d Max Filippov 2012-11-19  56  	movi	a3, 0x29	/* non-MX -- Most cores use Std Memory
c622b29d Max Filippov 2012-11-19  57  				 * Controlers which usually can't use RCW
c622b29d Max Filippov 2012-11-19  58  				 */
c622b29d Max Filippov 2012-11-19  59  #endif
c622b29d Max Filippov 2012-11-19  60  	wsr	a3, atomctl
c622b29d Max Filippov 2012-11-19  61  #endif  /* XCHAL_HAVE_S32C1I &&
c622b29d Max Filippov 2012-11-19  62  	 * (XCHAL_HW_MIN_VERSION >= XTENSA_HWVERSION_RC_2009_0)
c622b29d Max Filippov 2012-11-19  63  	 */

:::::: The code at line 55 was first introduced by commit
:::::: c622b29d1f38021411965b7e0170ab055551b257 xtensa: initialize atomctl SR

:::::: TO: Max Filippov <jcmvbkbc@...il.com>
:::::: CC: Chris Zankel <chris@...kel.net>

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