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From: Alexander van Heukelum <heukelum@mailshack.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <andi@firstfloor.org>,
	Jeremy Fitzhardinge <jeremy@goop.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Alexander van Heukelum <heukelum@fastmail.fm>,
	LKML <linux-kernel@vger.kernel.org>
Subject: K8, EFFICEON and CORE2 support the cmovxx instructions.
Date: Sat, 15 Mar 2008 20:19:46 +0100	[thread overview]
Message-ID: <20080315191946.GA21817@mailshack.com> (raw)
In-Reply-To: <1205530409.27413.1242484373@webmail.messagingengine.com>

K8, EFFICEON and CORE2 support the cmovxx instructions.

Instead of listing the cpu's that have support for the
cmovxx instructions, list the cpu's that don't.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
---

A bit of playing resulted in:

CPUS="M386 M486 M586 M586TSC M586MMX M686 MPENTIUMII MPENTIUMIII"
CPUS=$CPUS" MPENTIUMM MPENTIUM4 MK6 MK7 MK8 MCRUSOE MEFFICEON"
CPUS=$CPUS" MWINCHIPC6 MWINCHIP2 MWINCHIP3D MGEODEGX1 MGEODE_LX"
CPUS=$CPUS" MCYRIXIII MVIAC3_2 MVIAC7 MPSC MCORE2"

for cpu in $CPUS
do
        echo "CONFIG_${cpu}=y" > testconfig
        make ARCH=i386 allnoconfig KCONFIG_ALLCONFIG=testconfig > /dev/null
        echo ${cpu} >> result
        grep X86_CMOV .config >> result
        echo >> result
done

I'm quite sure that K8, EFFICEON and CORE2 support HAVE_CMOV, but
they did not set X86_CMOV.

Greetings,
	Alexander van Heukelum

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 31e92fb..7a3a2d4 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -399,7 +399,7 @@ config X86_TSC
 # generates cmov.
 config X86_CMOV
 	def_bool y
-	depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7)
+	depends on !(MCYRIXIII || MGEODE_LX || MGEODEGX1 || MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MK6 || M586MMX || M586TSC || M586 || M486 || M386)
 
 config X86_MINIMUM_CPU_FAMILY
 	int


  parent reply	other threads:[~2008-03-15 19:20 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-12 20:01 [PATCH] x86: merge the simple bitops and move them to bitops.h Alexander van Heukelum
2008-03-14 18:07 ` Jeremy Fitzhardinge
2008-03-14 19:43   ` Alexander van Heukelum
2008-03-14 19:55     ` Andi Kleen
2008-03-14 21:33       ` Alexander van Heukelum
2008-03-14 21:42         ` Andi Kleen
2008-03-14 22:01           ` Alexander van Heukelum
2008-03-14 22:18             ` Andi Kleen
2008-03-15 17:54               ` Alexander van Heukelum
2008-03-15 19:19         ` Alexander van Heukelum [this message]
2008-03-15 20:18           ` K8, EFFICEON and CORE2 support the cmovxx instructions H. Peter Anvin
2008-03-15 21:06             ` Alexander van Heukelum
2008-03-15 21:11               ` Willy Tarreau
2008-03-16 13:16                 ` [PATCH] x86: K8, GEODE_LX, CRUSOE, " Alexander van Heukelum
2008-03-21 12:38                   ` Ingo Molnar
2008-03-14 20:35     ` [PATCH v2] x86: merge the simple bitops and move them to bitops.h Alexander van Heukelum
2008-03-14 23:30       ` Randy Dunlap
2008-03-15 12:04         ` [PATCH v3] " Alexander van Heukelum
2008-03-21 12:35           ` Ingo Molnar
2008-03-14 21:15     ` [PATCH] " Jeremy Fitzhardinge

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