[PATCH] fix SMP kernel on SMP MoBo with APIC-less CPU

From: Christoph Hellwig (hch@ns.lst.de)
Date: Tue Aug 08 2000 - 03:52:52 EST

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The Subjecy says it all:
This patch fixes booting of a SMP-compiled i386 kernel on a SMP-capable
motherboard with (one) non SMP-capable (= APIC-less) CPU.
Example: AMD K6 in a dual i430TX board.

Christoph

-- 
Always remember that you are unique.  Just like everyone else.
--- linux/arch/i386/kernel/setup.c~	Fri Jul  7 04:42:06 2000
+++ linux/arch/i386/kernel/setup.c	Tue Jul 18 19:22:48 2000
@@ -723,7 +723,8 @@
 	/*
 	 * get boot-time SMP configuration:
 	 */
-	if (smp_found_config)
+	if (smp_found_config && /* try only if the cpu has a local apic */
+	      (boot_cpu_data.x86_capability & X86_FEATURE_APIC))
 		get_smp_config();
 #endif
 #ifdef CONFIG_X86_LOCAL_APIC
-
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Next message: Agust Karlsson: "Disable DMA"
Previous message: Igmar Palsenberg: "Re: ncr53c400 SCSI card (HP scanner)"
Next in thread: Maciej W. Rozycki: "Re: [PATCH] fix SMP kernel on SMP MoBo with APIC-less CPU"
Reply: Maciej W. Rozycki: "Re: [PATCH] fix SMP kernel on SMP MoBo with APIC-less CPU"
Reply: Linus Torvalds: "Re: [PATCH] fix SMP kernel on SMP MoBo with APIC-less CPU"
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