1026 	unsigned long dr6;  in debug_read_clear_dr6()  local
1039 	get_debugreg(dr6, 6);  in debug_read_clear_dr6()
1041 	dr6 ^= DR6_RESERVED; /* Flip to positive polarity */  in debug_read_clear_dr6()
1043 	return dr6;  in debug_read_clear_dr6()
1071 static bool notify_debug(struct pt_regs *regs, unsigned long *dr6)  in notify_debug()  argument
1080 	if (notify_die(DIE_DEBUG, "debug", regs, (long)dr6, 0, SIGTRAP) == NOTIFY_STOP)  in notify_debug()
1086 static noinstr void exc_debug_kernel(struct pt_regs *regs, unsigned long dr6)  in exc_debug_kernel()  argument
1133 	    (dr6 & DR_STEP) && is_sysenter_singlestep(regs))  in exc_debug_kernel()
1134 		dr6 &= ~DR_STEP;  in exc_debug_kernel()
1139 	if (!dr6)  in exc_debug_kernel()
1142 	if (notify_debug(regs, &dr6))  in exc_debug_kernel()
1156 	if (WARN_ON_ONCE(dr6 & DR_STEP))  in exc_debug_kernel()
1165 static noinstr void exc_debug_user(struct pt_regs *regs, unsigned long dr6)  in exc_debug_user()  argument
1194 	current->thread.virtual_dr6 = (dr6 & DR_STEP);  in exc_debug_user()
1208 	icebp = !dr6;  in exc_debug_user()
1210 	if (notify_debug(regs, &dr6))  in exc_debug_user()
1222 	if (dr6 & DR_BUS_LOCK)  in exc_debug_user()
1226 	dr6 |= current->thread.virtual_dr6;  in exc_debug_user()
1227 	if (dr6 & (DR_STEP | DR_TRAP_BITS) || icebp)  in exc_debug_user()
1228 		send_sigtrap(regs, 0, get_si_code(dr6));  in exc_debug_user()
1268 	unsigned long dr6 = fred_event_data(regs);  in DEFINE_FREDENTRY_DEBUG()  local
1271 		exc_debug_user(regs, dr6);  in DEFINE_FREDENTRY_DEBUG()
1273 		exc_debug_kernel(regs, dr6);  in DEFINE_FREDENTRY_DEBUG()
1281 	unsigned long dr6 = debug_read_clear_dr6();  in DEFINE_IDTENTRY_RAW()  local
1284 		exc_debug_user(regs, dr6);  in DEFINE_IDTENTRY_RAW()
1286 		exc_debug_kernel(regs, dr6);  in DEFINE_IDTENTRY_RAW()