tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: a53913bacac4876eee9ce118b3101dff842318ef commit: c97c1d0165cc29f48725448620197d76e751d734 [2229/2229] KVM: SVM: CSV: Add ioctl API to unpin shared pages of CSV3 guest config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250515/202505152346.3HOURWea-lkp@i...) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) rustc: rustc 1.73.0 (cc66ad468 2023-10-03) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250515/202505152346.3HOURWea-lkp@i...) 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/202505152346.3HOURWea-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

arch/x86/kvm/svm/csv.c:2037: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Return negative error code on fail,

vim +2037 arch/x86/kvm/svm/csv.c 2035 2036 /**

2037 * Return negative error code on fail, 2038 * or return the number of pages unpinned successfully 2039 */ 2040 static int csv3_unpin_shared_memory(struct kvm *kvm, gpa_t gpa, u32 num_pages) 2041 { 2042 struct kvm_csv_info *csv; 2043 struct shared_page *sp; 2044 gfn_t gfn; 2045 unsigned long i; 2046 int unpin_cnt = 0; 2047 2048 csv = &to_kvm_svm_csv(kvm)->csv_info; 2049 gfn = gpa_to_gfn(gpa); 2050 2051 mutex_lock(&csv->sp_lock); 2052 for (i = 0; i < num_pages; i++, gfn++) { 2053 sp = shared_page_remove(&csv->sp_mgr, gfn); 2054 if (sp) { 2055 unpin_user_page(sp->page); 2056 kmem_cache_free(csv->sp_slab, sp); 2057 csv->sp_mgr.count--; 2058 unpin_cnt++; 2059 } 2060 } 2061 mutex_unlock(&csv->sp_lock); 2062 2063 return unpin_cnt; 2064 } 2065

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