[Xen-devel] RFC: Nested VMX patch series 17: cr4

["Dong, Eddie" <eddie.dong@xxxxxxxxx>]

Thx, Eddie

        Signed-off-by: Qing He <qing.he@xxxxxxxxx>
        Signed-off-by: Eddie Dong <eddie.dong@xxxxxxxxx>


diff -r 117cc0237936 xen/include/asm-x86/cpufeature.h
--- a/xen/include/asm-x86/cpufeature.h  Wed May 18 14:06:57 2011 +0800
+++ b/xen/include/asm-x86/cpufeature.h  Wed May 18 14:43:29 2011 +0800
@@ -216,6 +216,8 @@
 
 #define cpu_has_svm            boot_cpu_has(X86_FEATURE_SVM)
 
+#define cpu_has_vmx            boot_cpu_has(X86_FEATURE_VMXE)
+
 #endif /* __ASM_I386_CPUFEATURE_H */
 
 /* 
diff -r 117cc0237936 xen/include/asm-x86/hvm/hvm.h
--- a/xen/include/asm-x86/hvm/hvm.h     Wed May 18 14:06:57 2011 +0800
+++ b/xen/include/asm-x86/hvm/hvm.h     Wed May 18 14:43:29 2011 +0800
@@ -312,6 +312,8 @@
         X86_CR4_DE  | X86_CR4_PSE | X86_CR4_PAE |       \
         X86_CR4_MCE | X86_CR4_PGE | X86_CR4_PCE |       \
         X86_CR4_OSFXSR | X86_CR4_OSXMMEXCPT |           \
+       ((nestedhvm_enabled((_v)->domain) &&            \
+          cpu_has_vmx) ? X86_CR4_VMXE : 0)  |          \
         (xsave_enabled(_v) ? X86_CR4_OSXSAVE : 0))))
 
 /* These exceptions must always be intercepted. */

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