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charset=us-ascii Content-Disposition: inline In-Reply-To: <20240910163038.1298452-2-roypat@amazon.co.uk> Hi Patrick, [This is a private test report for your RFC patch.] kernel test robot noticed the following build errors: [auto build test ERROR on 332d2c1d713e232e163386c35a3ba0c1b90df83f] url: https://github.com/intel-lab-lkp/linux/commits/Patrick-Roy/kvm-gmem-Add-option-to-remove-gmem-from-direct-map/20240911-003258 base: 332d2c1d713e232e163386c35a3ba0c1b90df83f patch link: https://lore.kernel.org/r/20240910163038.1298452-2-roypat%40amazon.co.uk patch subject: [RFC PATCH v2 01/10] kvm: gmem: Add option to remove gmem from direct map config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20240914/202409140159.nGVKH1ST-lkp@intel.com/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/20240914/202409140159.nGVKH1ST-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/202409140159.nGVKH1ST-lkp@intel.com/ All errors (new ones prefixed by >>): >> arch/x86/kvm/../../../virt/kvm/guest_memfd.c:71:2: error: call to undeclared function 'flush_tlb_kernel_range'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 71 | flush_tlb_kernel_range(start, start + folio_size(folio)); | ^ 1 error generated. vim +/flush_tlb_kernel_range +71 arch/x86/kvm/../../../virt/kvm/guest_memfd.c 57 58 static int kvm_gmem_folio_set_private(struct folio *folio) 59 { 60 unsigned long start, npages, i; 61 int r; 62 63 start = (unsigned long) folio_address(folio); 64 npages = folio_nr_pages(folio); 65 66 for (i = 0; i < npages; ++i) { 67 r = set_direct_map_invalid_noflush(folio_page(folio, i)); 68 if (r) 69 goto out_remap; 70 } > 71 flush_tlb_kernel_range(start, start + folio_size(folio)); 72 folio_set_private(folio); 73 return 0; 74 out_remap: 75 for (; i > 0; i--) { 76 struct page *page = folio_page(folio, i - 1); 77 78 if (WARN_ON_ONCE(set_direct_map_default_noflush(page))) { 79 /* 80 * Random holes in the direct map are bad, let's mark 81 * these pages as corrupted memory so that the kernel 82 * avoids ever touching them again. 83 */ 84 folio_set_hwpoison(folio); 85 r = -EHWPOISON; 86 } 87 } 88 return r; 89 } 90 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki