Messages in this thread | | | Date | Fri, 10 Jun 2022 03:47:19 +0800 | From | kernel test robot <> | Subject | [intel-tdx:kvm-upstream-workaround 443/453] arch/x86/kvm/mmu/mmu.c:982:21: warning: variable 'type' set but not used |
| |
tree: https://github.com/intel/tdx.git kvm-upstream-workaround head: 64f3ddf316eab9398414b94e62a01d185e6e94c8 commit: d4ee16fc8532473025338c594b8fbe6a6faa0887 [443/453] KVM: x86/mmu: update lpage_info on changing page_type config: i386-randconfig-a011 (https://download.01.org/0day-ci/archive/20220610/202206100310.NiXH6ebe-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 971e13d69e3e7b687213fef22952be6a328c426c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel/tdx/commit/d4ee16fc8532473025338c594b8fbe6a6faa0887 git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm-upstream-workaround git checkout d4ee16fc8532473025338c594b8fbe6a6faa0887 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kvm/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from arch/x86/kvm/mmu/mmu.c:18: In file included from arch/x86/kvm/irq.h:15: In file included from include/linux/kvm_host.h:47: include/linux/memfile_notifier.h:87:57: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] static int memfile_register_notifier(struct file *file, flags, ^ int >> arch/x86/kvm/mmu/mmu.c:982:21: warning: variable 'type' set but not used [-Wunused-but-set-variable] enum kvm_page_type type; ^ 1 warning and 1 error generated.
vim +/type +982 arch/x86/kvm/mmu/mmu.c
7c45d6a017129b Xiaoyao Li 2021-08-31 977 09cbecc5a0e81f Xiaoyao Li 2022-05-25 978 static void split_page_type(gfn_t gfn, struct kvm_memory_slot *slot, 09cbecc5a0e81f Xiaoyao Li 2022-05-25 979 enum pg_level level) 7c45d6a017129b Xiaoyao Li 2021-08-31 980 { 7c45d6a017129b Xiaoyao Li 2021-08-31 981 struct kvm_page_attr *page_attr = page_attr_slot(gfn, slot, level); 7c45d6a017129b Xiaoyao Li 2021-08-31 @982 enum kvm_page_type type; 7c45d6a017129b Xiaoyao Li 2021-08-31 983 gfn_t base_gfn; 7c45d6a017129b Xiaoyao Li 2021-08-31 984 7c45d6a017129b Xiaoyao Li 2021-08-31 985 if (WARN_ON_ONCE(!kvm_page_type_valid(page_attr) || level <= PG_LEVEL_4K)) 7c45d6a017129b Xiaoyao Li 2021-08-31 986 return; 7c45d6a017129b Xiaoyao Li 2021-08-31 987 7c45d6a017129b Xiaoyao Li 2021-08-31 988 base_gfn = gfn & ~(KVM_PAGES_PER_HPAGE(level) - 1); 7c45d6a017129b Xiaoyao Li 2021-08-31 989 type = page_attr->type; 09cbecc5a0e81f Xiaoyao Li 2022-05-25 990 7c45d6a017129b Xiaoyao Li 2021-08-31 991 /* 7c45d6a017129b Xiaoyao Li 2021-08-31 992 * Set the type to KVM_PAGE_TYPE_MIXED in advance since when a large 7c45d6a017129b Xiaoyao Li 2021-08-31 993 * page needs to be split means one of the 4K page of it needs to be 7c45d6a017129b Xiaoyao Li 2021-08-31 994 * changed to oppsite type 7c45d6a017129b Xiaoyao Li 2021-08-31 995 */ d4ee16fc853247 Isaku Yamahata 2022-06-02 996 page_type_set(page_attr, KVM_PAGE_TYPE_MIXED, base_gfn, slot, level); 7c45d6a017129b Xiaoyao Li 2021-08-31 997 } 7c45d6a017129b Xiaoyao Li 2021-08-31 998
:::::: The code at line 982 was first introduced by commit :::::: 7c45d6a017129b913c57fb0a2cc14a866f2434a4 KVM: MMU: Update page_attr->type when guest converts the page
:::::: TO: Xiaoyao Li <xiaoyao.li@intel.com> :::::: CC: Isaku Yamahata <isaku.yamahata@intel.com>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
| |