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From: Alexander Graf <agraf@suse.de>
To: kvm@vger.kernel.org
Cc: avi@redhat.com, Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 1/2] Add EFER descriptions for FFXSR
Date: Wed, 28 Jan 2009 10:22:12 +0100	[thread overview]
Message-ID: <1233134533-3255-2-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1233134533-3255-1-git-send-email-agraf@suse.de>

AMD k10 includes support for the FFXSR feature, which leaves out
XMM registers on FXSAVE/FXSAVE when the EFER_FFXSR bit is set in
EFER.

The CPUID feature bit exists already, but the EFER bit is missing
currently, so this patch adds it to the list of known EFER bits.

Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Joerg Roedel <joerg.roedel@amd.com>
---
 arch/x86/include/asm/msr-index.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 1890032..42378af 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -19,12 +19,14 @@
 #define _EFER_LMA		10 /* Long mode active (read-only) */
 #define _EFER_NX		11 /* No execute enable */
 #define _EFER_SVME		12 /* Enable virtualization */
+#define _EFER_FFXSR		14 /* Enable Fast FXSAVE/FXRSTOR */
 
 #define EFER_SCE		(1<<_EFER_SCE)
 #define EFER_LME		(1<<_EFER_LME)
 #define EFER_LMA		(1<<_EFER_LMA)
 #define EFER_NX			(1<<_EFER_NX)
 #define EFER_SVME		(1<<_EFER_SVME)
+#define EFER_FFXSR		(1<<_EFER_FFXSR)
 
 /* Intel MSRs. Some also available on other CPUs */
 #define MSR_IA32_PERFCTR0		0x000000c1
-- 
1.6.0.2


  reply	other threads:[~2009-01-28  9:22 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-28  9:22 [PATCH 0/2] Add support for FFXSR Alexander Graf
2009-01-28  9:22 ` Alexander Graf [this message]
2009-01-28  9:22   ` [PATCH 2/2] Add FFXSR support to KVM Alexander Graf
2009-02-02 14:14     ` Avi Kivity
2009-02-02 15:23 [PATCH 0/2] Add support for FFXSR v2 Alexander Graf
2009-02-02 15:23 ` [PATCH 1/2] Add EFER descriptions for FFXSR Alexander Graf

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