1146 	unsigned long dr6;  in debug_read_reset_dr6()  local
1148 	get_debugreg(dr6, 6);  in debug_read_reset_dr6()
1149 	dr6 ^= DR6_RESERVED; /* Flip to positive polarity */  in debug_read_reset_dr6()
1171 	return dr6;  in debug_read_reset_dr6()
1199 static bool notify_debug(struct pt_regs *regs, unsigned long *dr6)  in notify_debug()  argument
1208 	if (notify_die(DIE_DEBUG, "debug", regs, (long)dr6, 0, SIGTRAP) == NOTIFY_STOP)  in notify_debug()
1214 static noinstr void exc_debug_kernel(struct pt_regs *regs, unsigned long dr6)  in exc_debug_kernel()  argument
1261 	    (dr6 & DR_STEP) && is_sysenter_singlestep(regs))  in exc_debug_kernel()
1262 		dr6 &= ~DR_STEP;  in exc_debug_kernel()
1267 	if (!dr6)  in exc_debug_kernel()
1270 	if (notify_debug(regs, &dr6))  in exc_debug_kernel()
1284 	if (WARN_ON_ONCE(dr6 & DR_STEP))  in exc_debug_kernel()
1293 static noinstr void exc_debug_user(struct pt_regs *regs, unsigned long dr6)  in exc_debug_user()  argument
1322 	current->thread.virtual_dr6 = (dr6 & DR_STEP);  in exc_debug_user()
1336 	icebp = !dr6;  in exc_debug_user()
1338 	if (notify_debug(regs, &dr6))  in exc_debug_user()
1350 	if (dr6 & DR_BUS_LOCK)  in exc_debug_user()
1354 	dr6 |= current->thread.virtual_dr6;  in exc_debug_user()
1355 	if (dr6 & (DR_STEP | DR_TRAP_BITS) || icebp)  in exc_debug_user()
1356 		send_sigtrap(regs, 0, get_si_code(dr6));  in exc_debug_user()
1396 	unsigned long dr6 = fred_event_data(regs);  in DEFINE_FREDENTRY_DEBUG()  local
1399 		exc_debug_user(regs, dr6);  in DEFINE_FREDENTRY_DEBUG()
1401 		exc_debug_kernel(regs, dr6);  in DEFINE_FREDENTRY_DEBUG()
1409 	unsigned long dr6 = debug_read_reset_dr6();  in DEFINE_IDTENTRY_RAW()  local
1412 		exc_debug_user(regs, dr6);  in DEFINE_IDTENTRY_RAW()
1414 		exc_debug_kernel(regs, dr6);  in DEFINE_IDTENTRY_RAW()