Hi Pete, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 045169816b31b10faed984b01c390db1b32ee4c1 commit: d0b73b488c55df905ea8faaad079f8535629ed26 xtensa: Add config files for Diamond 233L - Rev C processor variant date: 3 years, 10 months ago config: xtensa-generic_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 d0b73b488c55df905ea8faaad079f8535629ed26 # 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:41: Error: invalid register >> 'atomctl' for 'wsr' instruction vim +41 arch/xtensa/include/asm/initialize_mmu.h c622b29d Max Filippov 2012-11-19 25 c622b29d Max Filippov 2012-11-19 26 #ifdef __ASSEMBLY__ c622b29d Max Filippov 2012-11-19 27 c622b29d Max Filippov 2012-11-19 28 #define XTENSA_HWVERSION_RC_2009_0 230000 c622b29d Max Filippov 2012-11-19 29 c622b29d Max Filippov 2012-11-19 30 .macro initialize_mmu c622b29d Max Filippov 2012-11-19 31 c622b29d Max Filippov 2012-11-19 32 #if XCHAL_HAVE_S32C1I && (XCHAL_HW_MIN_VERSION >= XTENSA_HWVERSION_RC_2009_0) c622b29d Max Filippov 2012-11-19 33 /* c622b29d Max Filippov 2012-11-19 34 * We Have Atomic Operation Control (ATOMCTL) Register; Initialize it. c622b29d Max Filippov 2012-11-19 35 * For details see Documentation/xtensa/atomctl.txt c622b29d Max Filippov 2012-11-19 36 */ c622b29d Max Filippov 2012-11-19 37 #if XCHAL_DCACHE_IS_COHERENT c622b29d Max Filippov 2012-11-19 38 movi a3, 0x25 /* For SMP/MX -- internal for writeback, c622b29d Max Filippov 2012-11-19 39 * RCW otherwise c622b29d Max Filippov 2012-11-19 40 */ c622b29d Max Filippov 2012-11-19 @41 #else c622b29d Max Filippov 2012-11-19 42 movi a3, 0x29 /* non-MX -- Most cores use Std Memory c622b29d Max Filippov 2012-11-19 43 * Controlers which usually can't use RCW c622b29d Max Filippov 2012-11-19 44 */ c622b29d Max Filippov 2012-11-19 45 #endif c622b29d Max Filippov 2012-11-19 46 wsr a3, atomctl c622b29d Max Filippov 2012-11-19 47 #endif /* XCHAL_HAVE_S32C1I && c622b29d Max Filippov 2012-11-19 48 * (XCHAL_HW_MIN_VERSION >= XTENSA_HWVERSION_RC_2009_0) c622b29d Max Filippov 2012-11-19 49 */ :::::: The code at line 41 was first introduced by commit :::::: c622b29d1f38021411965b7e0170ab055551b257 xtensa: initialize atomctl SR :::::: TO: Max Filippov <jcmvb...@gmail.com> :::::: CC: Chris Zankel <ch...@zankel.net> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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