---

yaml --- r: 202316 b: refs/heads/master c: 518c8ae h: refs/heads/master v: v3
git-mirror · Aug 1, 2010 · a05a026 · a05a026
1 parent a0ed3a4
commit a05a026
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Showing 3 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7bee342a9e994cce7122cb187b4f3ded9d871165
+refs/heads/master: 518c8aee5ca74fc03273fc6b4893cf456d65d545
diff --git a/trunk/arch/x86/include/asm/vmx.h b/trunk/arch/x86/include/asm/vmx.h
@@ -376,6 +376,8 @@ enum vmcs_field {
 #define VMX_EPT_EXTENT_CONTEXT_BIT		(1ull << 25)
 #define VMX_EPT_EXTENT_GLOBAL_BIT		(1ull << 26)
 
+#define VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT      (1ull << 9) /* (41 - 32) */
+
 #define VMX_EPT_DEFAULT_GAW			3
 #define VMX_EPT_MAX_GAW				0x4
 #define VMX_EPT_MT_EPTE_SHIFT			3

diff --git a/trunk/arch/x86/kvm/vmx.c b/trunk/arch/x86/kvm/vmx.c
@@ -360,6 +360,11 @@ static inline bool cpu_has_vmx_invept_global(void)
 	return vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT;
 }
 
+static inline bool cpu_has_vmx_invvpid_single(void)
+{
+	return vmx_capability.vpid & VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT;
+}
+
 static inline bool cpu_has_vmx_ept(void)
 {
 	return vmcs_config.cpu_based_2nd_exec_ctrl &
@@ -504,7 +509,8 @@ static inline void vpid_sync_vcpu_all(struct vcpu_vmx *vmx)
 	if (vmx->vpid == 0)
 		return;
 
-	__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vmx->vpid, 0);
+	if (cpu_has_vmx_invvpid_single())
+		__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vmx->vpid, 0);
 }
 
 static inline void ept_sync_global(void)