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From: Wanpeng Li <wanpeng.li@hotmail.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, Bandan Das <bsd@redhat.com>,
	Wincy Van <fanwenyi0529@gmail.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Wanpeng Li <wanpeng.li@hotmail.com>
Subject: [PATCH] KVM: nVMX: emulate the INVVPID instruction
Date: Wed, 23 Sep 2015 15:59:09 +0800	[thread overview]
Message-ID: <BLU436-SMTP5413CD8F74C5A28A5A178880440@phx.gbl> (raw)

Add the INVVPID instruction emulation.

Reviewed-by: Wincy Van <fanwenyi0529@gmail.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
---
 arch/x86/include/asm/vmx.h |  1 +
 arch/x86/kvm/vmx.c         | 23 ++++++++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index d25f32a..69f3d71 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -397,6 +397,7 @@ enum vmcs_field {
 #define IDENTITY_PAGETABLE_PRIVATE_MEMSLOT	(KVM_USER_MEM_SLOTS + 2)
 
 #define VMX_NR_VPIDS				(1 << 16)
+#define VMX_VPID_EXTENT_INDIVIDUAL_ADDR 	0
 #define VMX_VPID_EXTENT_SINGLE_CONTEXT		1
 #define VMX_VPID_EXTENT_ALL_CONTEXT		2
 
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6ad991a..794c529 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7189,7 +7189,28 @@ static int handle_invept(struct kvm_vcpu *vcpu)
 
 static int handle_invvpid(struct kvm_vcpu *vcpu)
 {
-	kvm_queue_exception(vcpu, UD_VECTOR);
+	u32 vmx_instruction_info;
+	unsigned long type;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
+
+	switch (type) {
+	case VMX_VPID_EXTENT_INDIVIDUAL_ADDR:
+	case VMX_VPID_EXTENT_SINGLE_CONTEXT:
+	case VMX_VPID_EXTENT_ALL_CONTEXT:
+		vmx_flush_tlb(vcpu);
+		nested_vmx_succeed(vcpu);
+		break;
+	default:
+		nested_vmx_failInvalid(vcpu);
+		break;
+	}
+
+	skip_emulated_instruction(vcpu);
 	return 1;
 }
 
-- 
1.9.1


             reply	other threads:[~2015-09-23  7:59 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-23  7:59 Wanpeng Li [this message]
2015-09-23  8:39 ` [PATCH] KVM: nVMX: emulate the INVVPID instruction Paolo Bonzini
2015-09-23 10:30   ` Wanpeng Li
2015-09-24 15:45   ` Bandan Das
2015-09-25  7:53     ` Paolo Bonzini
2015-09-25 14:54       ` Bandan Das

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