linux-kernel - don't taint UP K7's running SMP kernels.

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Message-ID: <20060803183224.GA10797@redhat.com>
Date:	Thu, 3 Aug 2006 14:32:24 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: don't taint UP K7's running SMP kernels.

We have a test that looks for invalid pairings of certain athlon/durons
that weren't designed for SMP, and taint accordingly (with 'S') if we find
such a configuration.  However, this test shouldn't fire if there's only
a single CPU present. It's perfectly valid for an SMP kernel to boot on UP
hardware for example.

Signed-off-by: Dave Jones <davej@...hat.com>

--- linux-2.6/arch/i386/kernel/smpboot.c~	2006-08-03 14:29:47.000000000 -0400
+++ linux-2.6/arch/i386/kernel/smpboot.c	2006-08-03 14:30:43.000000000 -0400
@@ -177,6 +177,9 @@ static void __devinit smp_store_cpu_info
 	 */
 	if ((c->x86_vendor == X86_VENDOR_AMD) && (c->x86 == 6)) {

+		if (num_online_cpus() == 1)
+			goto valid_k7;
+
 		/* Athlon 660/661 is valid. */	
 		if ((c->x86_model==6) && ((c->x86_mask==0) || (c->x86_mask==1)))
 			goto valid_k7;
-- 
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