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SubjectRe: [kbuild-all] arch/xtensa/include/asm/initialize_mmu.h:55: Error: invalid register 'atomctl' for 'wsr' instruction
Hi Max,

On Fri, Jul 22, 2016 at 06:32:28PM +0800, kbuild test robot wrote:
>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

>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'

Are they really matter? Or I can shut these errors up.

Thanks,
Fengguang

>>> 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@gmail.com>
>:::::: CC: Chris Zankel <chris@zankel.net>
>
>---
>0-DAY kernel test infrastructure Open Source Technology Center
>https://lists.01.org/pipermail/kbuild-all Intel Corporation


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