tree: https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git sev-es-client-v5.6-rc5 head: 371cfd3c565d6bed145f4b0c07bf780649d70278 commit: 9326787bbae47dd72b04991f1429299df0f4266d [60/65] x86/realmode: Setup AP jump table reproduce: # apt-get install sparse # sparse version: v0.6.1-180-g0558317d-dirty git checkout 9326787bbae47dd72b04991f1429299df0f4266d make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/x86/kernel/sev-es.c:244:20: sparse: expected unsigned short [usertype] *jump_table arch/x86/kernel/sev-es.c:244:20: sparse: got void [noderef] <asn:2> * arch/x86/kernel/sev-es.c:251:17: sparse: expected void volatile [noderef] <asn:2> *addr arch/x86/kernel/sev-es.c:251:17: sparse: got unsigned short [usertype] *jump_table vim +244 arch/x86/kernel/sev-es.c 224 225 int sev_es_setup_ap_jump_table(struct real_mode_header *rmh) 226 { 227 u16 startup_cs, startup_ip; 228 phys_addr_t jump_table_pa; 229 u64 jump_table_addr; 230 u16 *jump_table; 231 232 jump_table_addr = sev_es_get_jump_table_addr(); 233 234 /* Check if AP Jump Table is non-zero and page-aligned */ 235 if (!jump_table_addr || jump_table_addr & ~PAGE_MASK) 236 return 0; 237 238 jump_table_pa = jump_table_addr & PAGE_MASK; 239 240 startup_cs = (u16)(rmh->trampoline_start >> 4); 241 startup_ip = (u16)(rmh->sev_es_trampoline_start - 242 rmh->trampoline_start); 243 245 if (!jump_table) 246 return -EIO; 247 248 jump_table[0] = startup_ip; 249 jump_table[1] = startup_cs; 250 252 253 return 0; 254 } 255 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org