move x86 specific oops=panic to generic code

The oops=panic cmdline option is not x86 specific, move it to generic code.
Update documentation.

Signed-off-by: Olaf Hering <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: "H. Peter Anvin" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/kernel-parameters.txt

···
 				perfmon on Intel CPUs instead of the
 				CPU specific event set.
 
+	oops=panic	Always panic on oopses. Default is to just kill the process,
+			but there is a small probability of deadlocking the machine.
+			This will also cause panics on machine check exceptions.
+			Useful together with panic=30 to trigger a reboot.
+
 	OSS		[HW,OSS]
 			See Documentation/sound/oss/oss-parameters.txt
 

Documentation/x86/x86_64/boot-options.txt

···
 
 Debugging
 
-  oops=panic	Always panic on oopses. Default is to just kill the process,
-		but there is a small probability of deadlocking the machine.
-		This will also cause panics on machine check exceptions.
-		Useful together with panic=30 to trigger a reboot.
-
   kstack=N	Print N words from the kernel stack in oops dumps.
 
   pagefaulttrace  Dump all page faults. Only useful for extreme debugging

arch/x86/kernel/dumpstack.c

···
 	oops_end(flags, regs, sig);
 }
 
-static int __init oops_setup(char *s)
-{
-	if (!s)
-		return -EINVAL;
-	if (!strcmp(s, "panic"))
-		panic_on_oops = 1;
-	return 0;
-}
-early_param("oops", oops_setup);
-
 static int __init kstack_setup(char *s)
 {
 	if (!s)

kernel/panic.c

···
 
 core_param(panic, panic_timeout, int, 0644);
 core_param(pause_on_oops, pause_on_oops, int, 0644);
+
+static int __init oops_setup(char *s)
+{
+	if (!s)
+		return -EINVAL;
+	if (!strcmp(s, "panic"))
+		panic_on_oops = 1;
+	return 0;
+}
+early_param("oops", oops_setup);