First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: c503e3eec382ac708ee7adf874add37b77c5d312 commit: bd6afa009a287836d57be3c25f6de989284bc072 [16069/16121] Merge branch 'next' of https://github.com/kvm-x86/linux.git config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20231030/202310302025.Pokm9vEs-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231030/202310302025.Pokm9vEs-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310302025.Pokm9vEs-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): >> arch/loongarch/kvm/mmu.c:411:6: warning: no previous prototype for 'kvm_unmap_gfn_range' [-Wmissing-prototypes] 411 | bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) | ^~~~~~~~~~~~~~~~~~~ arch/loongarch/kvm/mmu.c: In function 'kvm_unmap_gfn_range': >> arch/loongarch/kvm/mmu.c:420:48: error: invalid use of undefined type 'struct kvm_gfn_range' 420 | return kvm_ptw_top(kvm->arch.pgd, range->start << PAGE_SHIFT, | ^~ arch/loongarch/kvm/mmu.c:421:30: error: invalid use of undefined type 'struct kvm_gfn_range' 421 | range->end << PAGE_SHIFT, &ctx); | ^~ arch/loongarch/kvm/mmu.c: At top level: >> arch/loongarch/kvm/mmu.c:424:6: warning: no previous prototype for 'kvm_set_spte_gfn' [-Wmissing-prototypes] 424 | bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) | ^~~~~~~~~~~~~~~~ In file included from arch/loongarch/include/asm/uaccess.h:17, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/highmem.h:5, from arch/loongarch/kvm/mmu.c:6: arch/loongarch/kvm/mmu.c: In function 'kvm_set_spte_gfn': arch/loongarch/kvm/mmu.c:428:38: error: invalid use of undefined type 'struct kvm_gfn_range' 428 | kvm_pfn_t pfn = pte_pfn(range->arg.pte); | ^~ arch/loongarch/include/asm/pgtable.h:253:52: note: in definition of macro 'pte_pfn' 253 | #define pte_pfn(x) ((unsigned long)(((x).pte & _PFN_MASK) >> PFN_PTE_SHIFT)) | ^ arch/loongarch/kvm/mmu.c:429:26: error: invalid use of undefined type 'struct kvm_gfn_range' 429 | gpa_t gpa = range->start << PAGE_SHIFT; | ^~ In file included from include/linux/mm_types_task.h:16, from include/linux/mm_types.h:5, from include/linux/mmzone.h:22, from include/linux/gfp.h:7, from include/linux/xarray.h:15, from include/linux/list_lru.h:14, from include/linux/fs.h:13: arch/loongarch/kvm/mmu.c:443:49: error: invalid use of undefined type 'struct kvm_gfn_range' 443 | prot_bits |= _CACHE_MASK & pte_val(range->arg.pte); | ^~ arch/loongarch/include/asm/page.h:59:27: note: in definition of macro 'pte_val' 59 | #define pte_val(x) ((x).pte) | ^ arch/loongarch/kvm/mmu.c:450:57: error: invalid use of undefined type 'struct kvm_gfn_range' 450 | prot_bits |= __WRITEABLE & *ptep & pte_val(range->arg.pte); | ^~ arch/loongarch/include/asm/page.h:59:27: note: in definition of macro 'pte_val' 59 | #define pte_val(x) ((x).pte) | ^ arch/loongarch/kvm/mmu.c: At top level: >> arch/loongarch/kvm/mmu.c:456:6: warning: no previous prototype for 'kvm_age_gfn' [-Wmissing-prototypes] 456 | bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) | ^~~~~~~~~~~ arch/loongarch/kvm/mmu.c: In function 'kvm_age_gfn': arch/loongarch/kvm/mmu.c:464:48: error: invalid use of undefined type 'struct kvm_gfn_range' 464 | return kvm_ptw_top(kvm->arch.pgd, range->start << PAGE_SHIFT, | ^~ arch/loongarch/kvm/mmu.c:465:38: error: invalid use of undefined type 'struct kvm_gfn_range' 465 | range->end << PAGE_SHIFT, &ctx); | ^~ arch/loongarch/kvm/mmu.c: At top level: >> arch/loongarch/kvm/mmu.c:468:6: warning: no previous prototype for 'kvm_test_age_gfn' [-Wmissing-prototypes] 468 | bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) | ^~~~~~~~~~~~~~~~ arch/loongarch/kvm/mmu.c: In function 'kvm_test_age_gfn': arch/loongarch/kvm/mmu.c:470:26: error: invalid use of undefined type 'struct kvm_gfn_range' 470 | gpa_t gpa = range->start << PAGE_SHIFT; | ^~ arch/loongarch/kvm/mmu.c: In function 'kvm_map_page': >> arch/loongarch/kvm/mmu.c:787:24: error: 'struct kvm' has no member named 'mmu_invalidate_seq'; did you mean 'mn_invalidate_lock'? 787 | mmu_seq = kvm->mmu_invalidate_seq; | ^~~~~~~~~~~~~~~~~~ | mn_invalidate_lock >> arch/loongarch/kvm/mmu.c:810:13: error: implicit declaration of function 'mmu_invalidate_retry_hva' [-Werror=implicit-function-declaration] 810 | if (mmu_invalidate_retry_hva(kvm, mmu_seq, hva)) { | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kvm/mmu.c: In function 'kvm_unmap_gfn_range': >> arch/loongarch/kvm/mmu.c:422:1: error: control reaches end of non-void function [-Werror=return-type] 422 | } | ^ arch/loongarch/kvm/mmu.c: In function 'kvm_age_gfn': arch/loongarch/kvm/mmu.c:466:1: error: control reaches end of non-void function [-Werror=return-type] 466 | } | ^ cc1: some warnings being treated as errors vim +420 arch/loongarch/kvm/mmu.c 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 410 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @411 bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 412 { 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 413 kvm_ptw_ctx ctx; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 414 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 415 ctx.flag = 0; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 416 ctx.ops = kvm_flush_pte; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 417 kvm_ptw_prepare(kvm, &ctx); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 418 INIT_LIST_HEAD(&ctx.list); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 419 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @420 return kvm_ptw_top(kvm->arch.pgd, range->start << PAGE_SHIFT, 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 421 range->end << PAGE_SHIFT, &ctx); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @422 } 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 423 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @424 bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 425 { 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 426 unsigned long prot_bits; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 427 kvm_pte_t *ptep; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 428 kvm_pfn_t pfn = pte_pfn(range->arg.pte); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 429 gpa_t gpa = range->start << PAGE_SHIFT; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 430 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 431 ptep = kvm_populate_gpa(kvm, NULL, gpa, 0); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 432 if (!ptep) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 433 return false; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 434 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 435 /* Replacing an absent or old page doesn't need flushes */ 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 436 if (!kvm_pte_present(NULL, ptep) || !kvm_pte_young(*ptep)) { 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 437 kvm_set_pte(ptep, 0); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 438 return false; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 439 } 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 440 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 441 /* Fill new pte if write protected or page migrated */ 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 442 prot_bits = _PAGE_PRESENT | __READABLE; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 443 prot_bits |= _CACHE_MASK & pte_val(range->arg.pte); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 444 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 445 /* 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 446 * Set _PAGE_WRITE or _PAGE_DIRTY iff old and new pte both support 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 447 * _PAGE_WRITE for map_page_fast if next page write fault 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 448 * _PAGE_DIRTY since gpa has already recorded as dirty page 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 449 */ 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 450 prot_bits |= __WRITEABLE & *ptep & pte_val(range->arg.pte); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 451 kvm_set_pte(ptep, kvm_pfn_pte(pfn, __pgprot(prot_bits))); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 452 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 453 return true; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 454 } 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 455 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @456 bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 457 { 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 458 kvm_ptw_ctx ctx; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 459 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 460 ctx.flag = 0; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 461 ctx.ops = kvm_mkold_pte; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 462 kvm_ptw_prepare(kvm, &ctx); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 463 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 464 return kvm_ptw_top(kvm->arch.pgd, range->start << PAGE_SHIFT, 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 465 range->end << PAGE_SHIFT, &ctx); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 466 } 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 467 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 @468 bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 469 { 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 470 gpa_t gpa = range->start << PAGE_SHIFT; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 471 kvm_pte_t *ptep = kvm_populate_gpa(kvm, NULL, gpa, 0); 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 472 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 473 if (ptep && kvm_pte_present(NULL, ptep) && kvm_pte_young(*ptep)) 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 474 return true; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 475 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 476 return false; 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 477 } 752e2cd7b4fb41 Tianrui Zhao 2023-10-02 478 :::::: The code at line 420 was first introduced by commit :::::: 752e2cd7b4fb412f3e008493e0195e357bab9773 LoongArch: KVM: Implement kvm mmu operations :::::: TO: Tianrui Zhao <zhaotianrui@xxxxxxxxxxx> :::::: CC: Huacai Chen <chenhuacai@xxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
