[PATCH] x86_64: Don't confuse noapic with noapictimer

Handling common prefixes is tricky.

Signed-off-by: Andi Kleen <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/x86_64/kernel/setup.c

···
 		    !memcmp(from, "disableapic", 11))
 			disable_apic = 1;
 
-		if (!memcmp(from, "noapic", 6)) 
+		/* Don't confuse with noapictimer */
+		if (!memcmp(from, "noapic", 6) &&
+			(from[6] == ' ' || from[6] == 0))
 			skip_ioapic_setup = 1;
 
 		/* Make sure to not confuse with apic= */