diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 5be4d3ff5e701be9db22c9e87c6ff3662a6b56d0..80e40de446c00b384cfea833841c9df724c1bb5a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4064,7 +4064,9 @@
 				[[,]s[mp]#### \
 				[[,]b[ios] | a[cpi] | k[bd] | t[riple] | e[fi] | p[ci]] \
 				[[,]f[orce]
-			Where reboot_mode is one of warm (soft) or cold (hard) or gpio,
+			Where reboot_mode is one of warm (soft) or cold (hard) or gpio
+					(prefix with 'panic_' to set mode for panic
+					reboot only),
 			      reboot_type is one of bios, acpi, kbd, triple, efi, or pci,
 			      reboot_force is either force or not specified,
 			      reboot_cpu is s[mp]#### with #### being the processor
diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index e63799a6e89515d0893606530b07e101f39c52fb..3734cd8f38a896d55af2ff3a3f3518707444c4fe 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -14,6 +14,7 @@ struct device;
 #define SYS_POWER_OFF	0x0003	/* Notify of system power off */
 
 enum reboot_mode {
+	REBOOT_UNDEFINED = -1,
 	REBOOT_COLD = 0,
 	REBOOT_WARM,
 	REBOOT_HARD,
@@ -21,6 +22,7 @@ enum reboot_mode {
 	REBOOT_GPIO,
 };
 extern enum reboot_mode reboot_mode;
+extern enum reboot_mode panic_reboot_mode;
 
 enum reboot_type {
 	BOOT_TRIPLE	= 't',
diff --git a/kernel/panic.c b/kernel/panic.c
index a6145050a8da21a24706d48138f1545438afdb5a..8779d64bace0b1db43672924f637f078225da8e3 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -306,6 +306,8 @@ void panic(const char *fmt, ...)
 		 * shutting down.  But if there is a chance of
 		 * rebooting the system it will be rebooted.
 		 */
+		if (panic_reboot_mode != REBOOT_UNDEFINED)
+			reboot_mode = panic_reboot_mode;
 		emergency_restart();
 	}
 #ifdef __sparc__
diff --git a/kernel/reboot.c b/kernel/reboot.c
index e1b79b6a273550516a57d3f7db10c236fcdf0305..b9e79e8c722654e84cc90407f3dfc8322d4ffe23 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -31,6 +31,7 @@ EXPORT_SYMBOL(cad_pid);
 #define DEFAULT_REBOOT_MODE
 #endif
 enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE;
+enum reboot_mode panic_reboot_mode = REBOOT_UNDEFINED;
 
 /*
  * This variable is used privately to keep track of whether or not
@@ -519,6 +520,8 @@ EXPORT_SYMBOL_GPL(orderly_reboot);
 static int __init reboot_setup(char *str)
 {
 	for (;;) {
+		enum reboot_mode *mode;
+
 		/*
 		 * Having anything passed on the command line via
 		 * reboot= will cause us to disable DMI checking
@@ -526,17 +529,24 @@ static int __init reboot_setup(char *str)
 		 */
 		reboot_default = 0;
 
+		if (!strncmp(str, "panic_", 6)) {
+			mode = &panic_reboot_mode;
+			str += 6;
+		} else {
+			mode = &reboot_mode;
+		}
+
 		switch (*str) {
 		case 'w':
-			reboot_mode = REBOOT_WARM;
+			*mode = REBOOT_WARM;
 			break;
 
 		case 'c':
-			reboot_mode = REBOOT_COLD;
+			*mode = REBOOT_COLD;
 			break;
 
 		case 'h':
-			reboot_mode = REBOOT_HARD;
+			*mode = REBOOT_HARD;
 			break;
 
 		case 's':
@@ -553,11 +563,11 @@ static int __init reboot_setup(char *str)
 				if (rc)
 					return rc;
 			} else
-				reboot_mode = REBOOT_SOFT;
+				*mode = REBOOT_SOFT;
 			break;
 		}
 		case 'g':
-			reboot_mode = REBOOT_GPIO;
+			*mode = REBOOT_GPIO;
 			break;
 
 		case 'b':