* Re: [RFC PATCH v2 01/10] kvm: gmem: Add option to remove gmem from direct map
[not found] <20240910163038.1298452-2-roypat@amazon.co.uk>
@ 2024-09-13 17:43 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-09-13 17:43 UTC (permalink / raw)
To: Patrick Roy; +Cc: llvm, oe-kbuild-all
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 <lkp@intel.com>
| 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
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