Hi Benjamin, [auto build test ERROR on powerpc/next] [also build test ERROR on v4.13-rc1 next-20170717] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Benjamin-Herrenschmidt/powerpc-mm-radix-Don-t-iterate-all-sets-when-flushing-the-PWC/20170715-044140 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-pasemi_defconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc All error/warnings (new ones prefixed by >>): In file included from include/asm-generic/bug.h:4:0, from arch/powerpc/include/asm/bug.h:127, from include/linux/bug.h:4, from include/linux/mmdebug.h:4, from include/linux/mm.h:8, from arch/powerpc/mm/tlb-radix.c:12: arch/powerpc/mm/tlb-radix.c: In function 'radix__flush_tlb_collapsed_pmd': >> include/linux/compiler.h:529:38: error: call to '__compiletime_assert_378' >> declared with attribute error: BUILD_BUG failed _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:512:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:529:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/bug.h:54:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/bug.h:88:21: note: in expansion of macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") ^~~~~~~~~~~~~~~~ >> include/linux/huge_mm.h:218:27: note: in expansion of macro 'BUILD_BUG' #define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; }) ^~~~~~~~~ >> arch/powerpc/mm/tlb-radix.c:378:15: note: in expansion of macro >> 'HPAGE_PMD_SIZE' end = addr + HPAGE_PMD_SIZE; ^~~~~~~~~~~~~~ vim +/HPAGE_PMD_SIZE +378 arch/powerpc/mm/tlb-radix.c 353 354 void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr) 355 { 356 int local = mm_is_thread_local(mm); 357 unsigned long ap = mmu_get_ap(mmu_virtual_psize); 358 unsigned long pid, end; 359 360 361 pid = mm ? mm->context.id : 0; 362 if (unlikely(pid == MMU_NO_CONTEXT)) 363 goto no_context; 364 365 /* 4k page size, just blow the world */ 366 if (PAGE_SIZE == 0x1000) { 367 radix__flush_all_mm(mm); 368 return; 369 } 370 371 /* Otherwise first do the PWC */ 372 if (local) 373 _tlbiel_pid(pid, RIC_FLUSH_PWC); 374 else 375 _tlbie_pid(pid, RIC_FLUSH_PWC); 376 377 /* Then iterate the pages */ > 378 end = addr + HPAGE_PMD_SIZE; 379 for (; addr < end; addr += PAGE_SIZE) { 380 if (local) 381 _tlbiel_va(addr, pid, ap, RIC_FLUSH_TLB); 382 else 383 _tlbie_va(addr, pid, ap, RIC_FLUSH_TLB); 384 } 385 no_context: 386 preempt_enable(); 387 } 388 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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