From: davej@redhat.com
To: torvalds@osdl.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Cleanup SEP errata workaround.
Date: Mon, 29 Sep 2003 18:04:34 +0100 [thread overview]
Message-ID: <E1A41Rq-0000N1-00@hardwired> (raw)
This looks a little simpler, and has the same effect.
diff -urpN --exclude-from=/home/davej/.exclude bk-linus/arch/i386/kernel/cpu/intel.c linux-2.5/arch/i386/kernel/cpu/intel.c
--- bk-linus/arch/i386/kernel/cpu/intel.c 2003-09-10 20:35:24.000000000 +0100
+++ linux-2.5/arch/i386/kernel/cpu/intel.c 2003-09-24 01:34:29.000000000 +0100
@@ -238,12 +269,9 @@ static void __init init_intel(struct cpu
}
/* SEP CPUID bug: Pentium Pro reports SEP but doesn't have it until model 3 mask 3 */
- if ( c->x86 == 6) {
- unsigned model_mask = (c->x86_model << 8) + c->x86_mask;
- if (model_mask < 0x0303)
- clear_bit(X86_FEATURE_SEP, c->x86_capability);
- }
-
+ if ((c->x86<<8 | c->x86_model<<4 | c->x86_mask) < 0x633)
+ clear_bit(X86_FEATURE_SEP, c->x86_capability);
+
/* Names for the Pentium II/Celeron processors
detectable only by also checking the cache size.
Dixon is NOT a Celeron. */
next reply other threads:[~2003-09-29 17:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-29 17:04 davej [this message]
2003-09-29 17:53 ` [PATCH] Cleanup SEP errata workaround Linus Torvalds
2003-09-29 17:59 ` Dave Jones
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