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Message-Id: <1273594667-17175-5-git-send-email-glommer@redhat.com>
Date: Tue, 11 May 2010 12:17:42 -0400
From: Glauber Costa <glommer@...hat.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, avi@...hat.com, zamsden@...hat.com
Subject: [PATCH 4/9] add new KVMCLOCK cpuid feature
This cpuid, KVM_CPUID_CLOCKSOURCE2, will indicate to the guest
that kvmclock is available through a new set of MSRs. The old ones
are deprecated.
Signed-off-by: Glauber Costa <glommer@...hat.com>
---
arch/x86/include/asm/kvm_para.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 9734808..f019f8c 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -16,6 +16,10 @@
#define KVM_FEATURE_CLOCKSOURCE 0
#define KVM_FEATURE_NOP_IO_DELAY 1
#define KVM_FEATURE_MMU_OP 2
+/* This indicates that the new set of kvmclock msrs
+ * are available. The use of 0x11 and 0x12 is deprecated
+ */
+#define KVM_FEATURE_CLOCKSOURCE2 3
#define MSR_KVM_WALL_CLOCK 0x11
#define MSR_KVM_SYSTEM_TIME 0x12
--
1.6.2.2
--
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