tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git kvm-coco-queue head: d2c7662a6ea1c325a9ae878b3f1a265264bcd18b commit: b6bcd88ad43aebc2385c7ff418b0532e80e60e19 [62/109] KVM: x86/tdp_mmu: Propagate building mirror page tables config: x86_64-randconfig-121-20241011 (https://download.01.org/0day-ci/archive/20241012/202410121644.Eq7zRGPO-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241012/202410121644.Eq7zRGPO-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/202410121644.Eq7zRGPO-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile *v @@ got unsigned long long [noderef] [usertype] __rcu *__ai_ptr @@ arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: expected void const volatile *v arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: got unsigned long long [noderef] [usertype] __rcu *__ai_ptr >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: cast removes address space '__rcu' of expression >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: cast removes address space '__rcu' of expression >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: cast removes address space '__rcu' of expression >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: cast removes address space '__rcu' of expression >> arch/x86/kvm/mmu/tdp_mmu.c:754:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:754:29: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:754:29: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c:1246:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[addressable] [usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:1246:25: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:1246:25: sparse: got unsigned long long [noderef] [usertype] __rcu *[addressable] [usertype] sptep >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: dereference of noderef expression >> arch/x86/kvm/mmu/tdp_mmu.c:474:14: sparse: sparse: dereference of noderef expression arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c: note: in included file (through include/linux/rbtree.h, include/linux/mm_types.h, include/linux/mmzone.h, ...): include/linux/rcupdate.h:869:25: sparse: sparse: context imbalance in '__tdp_mmu_zap_root' - unexpected unlock arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c:1536:33: sparse: sparse: context imbalance in 'tdp_mmu_split_huge_pages_root' - unexpected unlock arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long [usertype] *sptep @@ got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep @@ arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: expected unsigned long long [usertype] *sptep arch/x86/kvm/mmu/tdp_mmu.c:618:33: sparse: got unsigned long long [noderef] [usertype] __rcu *[usertype] sptep vim +474 arch/x86/kvm/mmu/tdp_mmu.c 455 456 static int __must_check set_external_spte_present(struct kvm *kvm, tdp_ptep_t sptep, 457 gfn_t gfn, u64 old_spte, 458 u64 new_spte, int level) 459 { 460 bool was_present = is_shadow_present_pte(old_spte); 461 bool is_present = is_shadow_present_pte(new_spte); 462 bool is_leaf = is_present && is_last_spte(new_spte, level); 463 kvm_pfn_t new_pfn = spte_to_pfn(new_spte); 464 int ret = 0; 465 466 KVM_BUG_ON(was_present, kvm); 467 468 lockdep_assert_held(&kvm->mmu_lock); 469 /* 470 * We need to lock out other updates to the SPTE until the external 471 * page table has been modified. Use FROZEN_SPTE similar to 472 * the zapping case. 473 */ > 474 if (!try_cmpxchg64(sptep, &old_spte, FROZEN_SPTE)) 475 return -EBUSY; 476 477 /* 478 * Use different call to either set up middle level 479 * external page table, or leaf. 480 */ 481 if (is_leaf) { 482 ret = static_call(kvm_x86_set_external_spte)(kvm, gfn, level, new_pfn); 483 } else { 484 void *external_spt = get_external_spt(gfn, new_spte, level); 485 486 KVM_BUG_ON(!external_spt, kvm); 487 ret = static_call(kvm_x86_link_external_spt)(kvm, gfn, level, external_spt); 488 } 489 if (ret) 490 __kvm_tdp_mmu_write_spte(sptep, old_spte); 491 else 492 __kvm_tdp_mmu_write_spte(sptep, new_spte); 493 return ret; 494 } 495 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
