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From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: guangrong.xiao@linux.intel.com
Subject: [PATCH] KVM: VMX: align vmx->nested.nested_vmx_secondary_ctls_high to vmx->rdtscp_enabled
Date: Tue, 15 Sep 2015 17:35:04 +0200	[thread overview]
Message-ID: <1442331304-29939-1-git-send-email-pbonzini@redhat.com> (raw)

The SECONDARY_EXEC_RDTSCP must be available iff RDTSCP is enabled in the
guest.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 arch/x86/kvm/vmx.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4df94e2b7c23..fb7a35ad9b02 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -8678,9 +8678,14 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
 					exec_control);
 		}
 
-		if (nested && !vmx->rdtscp_enabled)
-			vmx->nested.nested_vmx_secondary_ctls_high &=
-				~SECONDARY_EXEC_RDTSCP;
+		if (nested) {
+			if (vmx->rdtscp_enabled)
+				vmx->nested.nested_vmx_secondary_ctls_high |=
+					SECONDARY_EXEC_RDTSCP;
+			else
+				vmx->nested.nested_vmx_secondary_ctls_high &=
+					~SECONDARY_EXEC_RDTSCP;
+		}
 	}
 
 	/* Exposing INVPCID only when PCID is exposed */
-- 
1.8.3.1


                 reply	other threads:[~2015-09-15 15:35 UTC|newest]

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