Messages in this thread | | | Date | Wed, 29 Jun 2022 23:14:05 +0800 | From | kernel test robot <> | Subject | [intel-tdx:kvm-upstream-workaround 434/442] arch/x86/kvm/mmu/mmu.c:981:21: error: variable 'type' set but not used |
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tree: https://github.com/intel/tdx.git kvm-upstream-workaround head: 8af973ebaf30642129fc1ca63f155a469f9615ed commit: 2cf2a8208ae24b96f074aac76f0feef63489137d [434/442] KVM: x86/mmu: update lpage_info on changing page_type config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220629/202206292314.Byr20MEd-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a774ba7f60d1fef403b5507b1b1a7475d3684d71) 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/2cf2a8208ae24b96f074aac76f0feef63489137d git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm-upstream-workaround git checkout 2cf2a8208ae24b96f074aac76f0feef63489137d # 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
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All errors (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:981:21: error: variable 'type' set but not used [-Werror,-Wunused-but-set-variable] enum kvm_page_type type; ^ 2 errors generated.
vim +/type +981 arch/x86/kvm/mmu/mmu.c
aa7e272e931503d Xiaoyao Li 2021-08-31 976 dbe93493d574730 Xiaoyao Li 2022-05-25 977 static void split_page_type(gfn_t gfn, struct kvm_memory_slot *slot, dbe93493d574730 Xiaoyao Li 2022-05-25 978 enum pg_level level) aa7e272e931503d Xiaoyao Li 2021-08-31 979 { aa7e272e931503d Xiaoyao Li 2021-08-31 980 struct kvm_page_attr *page_attr = page_attr_slot(gfn, slot, level); aa7e272e931503d Xiaoyao Li 2021-08-31 @981 enum kvm_page_type type; aa7e272e931503d Xiaoyao Li 2021-08-31 982 gfn_t base_gfn; aa7e272e931503d Xiaoyao Li 2021-08-31 983 aa7e272e931503d Xiaoyao Li 2021-08-31 984 if (WARN_ON_ONCE(!kvm_page_type_valid(page_attr) || level <= PG_LEVEL_4K)) aa7e272e931503d Xiaoyao Li 2021-08-31 985 return; aa7e272e931503d Xiaoyao Li 2021-08-31 986 aa7e272e931503d Xiaoyao Li 2021-08-31 987 base_gfn = gfn & ~(KVM_PAGES_PER_HPAGE(level) - 1); aa7e272e931503d Xiaoyao Li 2021-08-31 988 type = page_attr->type; dbe93493d574730 Xiaoyao Li 2022-05-25 989 aa7e272e931503d Xiaoyao Li 2021-08-31 990 /* aa7e272e931503d Xiaoyao Li 2021-08-31 991 * Set the type to KVM_PAGE_TYPE_MIXED in advance since when a large aa7e272e931503d Xiaoyao Li 2021-08-31 992 * page needs to be split means one of the 4K page of it needs to be aa7e272e931503d Xiaoyao Li 2021-08-31 993 * changed to oppsite type aa7e272e931503d Xiaoyao Li 2021-08-31 994 */ 2cf2a8208ae24b9 Isaku Yamahata 2022-06-02 995 page_type_set(page_attr, KVM_PAGE_TYPE_MIXED, base_gfn, slot, level); aa7e272e931503d Xiaoyao Li 2021-08-31 996 } aa7e272e931503d Xiaoyao Li 2021-08-31 997
:::::: The code at line 981 was first introduced by commit :::::: aa7e272e931503dda524bd4f15d098a0d4ac28d7 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
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