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X-CSE-ConnectionGUID: XjgL1tPgS8KJgqwGRTKLow== X-CSE-MsgGUID: 7OB+/DIzRPy22ifuV9QI3Q== X-IronPort-AV: E=McAfee;i="6800,10657,11834"; a="82857912" X-IronPort-AV: E=Sophos;i="6.25,143,1779174000"; d="scan'208";a="82857912" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2026 05:03:10 -0700 X-CSE-ConnectionGUID: Xraje/QqS4KaocDTkcwTOA== X-CSE-MsgGUID: XwU1aqWDRgGqFlV18wCQhQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,143,1779174000"; d="scan'208";a="290967879" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by orviesa001.jf.intel.com with ESMTP; 02 Jul 2026 05:03:08 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1wfG8H-00000000Al9-3a2O; Thu, 02 Jul 2026 12:03:05 +0000 Date: Thu, 02 Jul 2026 20:02:50 +0800 From: kernel test robot To: cros-kernel-buildreports@googlegroups.com Cc: oe-kbuild-all@lists.linux.dev Subject: [android-common:android17-6.18-2026-04 10/10] arch/arm64/kvm/pkvm.c:687:13: warning: variable 'pages' set but not used Message-ID: <202607021923.YF0tmrex-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Hi Sebastian, FYI, the error/warning still remains. tree: https://android.googlesource.com/kernel/common android17-6.18-2026-04 head: edf956ebceeb7cdad6af1e86e3bc0f8ab20253ae commit: 312ab0333e80d95c4c1f17fa07ceb344cec5313d [10/10] ANDROID: KVM: On guest exit ask Trustzone to relinquish the borrowed pages config: arm64-defconfig (https://download.01.org/0day-ci/archive/20260702/202607021923.YF0tmrex-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 16.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260702/202607021923.YF0tmrex-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202607021923.YF0tmrex-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/arm64/kvm/pkvm.c: In function '__pkvm_pgtable_stage2_unmap': >> arch/arm64/kvm/pkvm.c:687:13: warning: variable 'pages' set but not used [-Wunused-but-set-variable=] 687 | u64 pages, nr_busy; | ^~~~~ vim +/pages +687 arch/arm64/kvm/pkvm.c 679 680 static int __pkvm_pgtable_stage2_unmap(struct kvm_pgtable *pgt, u64 start, u64 end) 681 { 682 struct kvm *kvm = kvm_s2_mmu_to_kvm(pgt->mmu); 683 pkvm_handle_t handle = kvm->arch.pkvm.handle; 684 struct mm_struct *mm = current->mm; 685 struct kvm_pinned_page *ppage; 686 struct pkvm_mapping *mapping; > 687 u64 pages, nr_busy; 688 int ret; 689 690 if (!handle) 691 return 0; 692 693 for_each_mapping_in_range_safe(pgt, start, end, mapping) { 694 int ret; 695 696 WARN_ON(kvm_vm_is_protected(kvm)); 697 698 ret = kvm_call_hyp_nvhe(__pkvm_host_unshare_guest, handle, 699 mapping->gfn, mapping->nr_pages); 700 701 if (WARN_ON(ret)) 702 return ret; 703 704 pkvm_mapping_remove(mapping, &pgt->pkvm_mappings); 705 kfree(mapping); 706 } 707 708 retry: 709 pages = 0; 710 nr_busy = 0; 711 ppage = kvm_pinned_pages_iter_first(&kvm->arch.pkvm.pinned_pages, start, end); 712 while (ppage) { 713 struct kvm_pinned_page *next = kvm_pinned_pages_iter_next(ppage, start, end); 714 715 WARN_ON(!kvm_vm_is_protected(kvm)); 716 ret = __reclaim_dying_page(ppage, handle); 717 cond_resched(); 718 if (ret == -EBUSY) { 719 nr_busy++; 720 ppage = next; 721 continue; 722 } 723 WARN_ON(ret); 724 unpin_user_pages_dirty_lock(&ppage->page, 1, true); 725 account_locked_vm(mm, 1 << ppage->order, false); 726 kvm_pinned_pages_remove(ppage, &kvm->arch.pkvm.pinned_pages); 727 kfree(ppage); 728 ppage = next; 729 } 730 731 if (nr_busy) { 732 do { 733 ret = kvm_call_hyp_nvhe(__pkvm_reclaim_dying_guest_ffa_resources, 734 kvm->arch.pkvm.handle); 735 WARN_ON(ret && ret != -EAGAIN); 736 cond_resched(); 737 } while (ret == -EAGAIN); 738 goto retry; 739 } 740 741 return 0; 742 } 743 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki