From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: don't taint UP K7's running SMP kernels.
Date: Thu, 3 Aug 2006 14:32:24 -0400 [thread overview]
Message-ID: <20060803183224.GA10797@redhat.com> (raw)
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@redhat.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;
--
http://www.codemonkey.org.uk
next reply other threads:[~2006-08-03 18:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 18:32 Dave Jones [this message]
2006-08-03 21:04 ` don't taint UP K7's running SMP kernels Alan Cox
2006-08-04 0:53 ` Andi Kleen
2006-08-04 0:55 ` don't taint UP K7's running SMP kernels. II Andi Kleen
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