Hi fangbaoshun, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 70522ace7844a6fe96f8b19325c878ff23701ee7 commit: 1c3b1095a26ed8bc1aa7ac3d4e8dd3e65964a74b [10552/14021] KVM: SVM: Add KVM_CSV_COMMAND_BATCH command for applying CSV RING_BUFFER mode config: x86_64-randconfig-003-20240921 (https://download.01.org/0day-ci/archive/20240922/202409220627.7Iic9Lx5-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240922/202409220627.7Iic9Lx5-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/202409220627.7Iic9Lx5-lkp@intel.com/ All errors (new ones prefixed by >>): arch/x86/kvm/svm/sev.c:2198:6: warning: no previous prototype for 'sev_install_hooks' [-Wmissing-prototypes] 2198 | void sev_install_hooks(void) | ^~~~~~~~~~~~~~~~~ arch/x86/kvm/svm/sev.c: In function 'sev_install_hooks':

...

arch/x86/kvm/svm/sev.c:2200:24: error: 'struct hygon_kvm_hooks_table' has no member named 'false' 2200 | hygon_kvm_hooks.sev_enabled = &sev_enabled; | ^ arch/x86/kvm/svm/sev.c:2200:39: error: lvalue required as unary '&' operand 2200 | hygon_kvm_hooks.sev_enabled = &sev_enabled; | ^

vim +2200 arch/x86/kvm/svm/sev.c 2195 2196 #ifdef CONFIG_HYGON_CSV 2197 /* Code to set all of the function and vaiable pointers */ 2198 void sev_install_hooks(void) 2199 {

2200 hygon_kvm_hooks.sev_enabled = &sev_enabled; 2201 hygon_kvm_hooks.sev_issue_cmd = sev_issue_cmd; 2202 hygon_kvm_hooks.get_num_contig_pages = get_num_contig_pages; 2203 hygon_kvm_hooks.sev_pin_memory = sev_pin_memory; 2204 hygon_kvm_hooks.sev_unpin_memory = sev_unpin_memory; 2205 2206 hygon_kvm_hooks.sev_hooks_installed = true; 2207 } 2208 #endif 2209

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