[Xen-devel] [PATCH v2 03/11] nested vmx: expose bit 55 of IA32_VMX_BASIC_MSR to guest VMM

[Dongxiao Xu <dongxiao.xu@xxxxxxxxx>]

Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vvmx.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index 4d0f26b..a09fa97 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -1299,7 +1299,7 @@ int nvmx_handle_vmwrite(struct cpu_user_regs *regs)
  */
 int nvmx_msr_read_intercept(unsigned int msr, u64 *msr_content)
 {
-    u64 data = 0, tmp;
+    u64 data = 0, tmp = 0;
     int r = 1;
 
     if ( !nestedhvm_enabled(current->domain) )
@@ -1311,9 +1311,10 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
     switch (msr) {
     case MSR_IA32_VMX_BASIC:
         data = VVMCS_REVISION | ((u64)PAGE_SIZE) << 32 | 
-               ((u64)MTRR_TYPE_WRBACK) << 50;
+               ((u64)MTRR_TYPE_WRBACK) << 50 | (1ULL << 55);
         break;
     case MSR_IA32_VMX_PINBASED_CTLS:
+    case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
         /* 1-seetings */
         data = PIN_BASED_EXT_INTR_MASK |
                PIN_BASED_NMI_EXITING |
@@ -1322,6 +1323,7 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
         data = ((data | tmp) << 32) | (tmp);
         break;
     case MSR_IA32_VMX_PROCBASED_CTLS:
+    case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
         /* 1-seetings */
         data = CPU_BASED_HLT_EXITING |
                CPU_BASED_VIRTUAL_INTR_PENDING |
@@ -1353,6 +1355,7 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
         data = (data << 32) | tmp;
         break;
     case MSR_IA32_VMX_EXIT_CTLS:
+    case MSR_IA32_VMX_TRUE_EXIT_CTLS:
         /* 1-seetings */
         tmp = VMX_EXIT_CTLS_DEFAULT1;
         data = VM_EXIT_ACK_INTR_ON_EXIT |
@@ -1367,6 +1370,7 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
         data = ((data | tmp) << 32) | tmp;
         break;
     case MSR_IA32_VMX_ENTRY_CTLS:
+    case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
         /* 1-seetings */
         tmp = VMX_ENTRY_CTLS_DEFAULT1;
         data = VM_ENTRY_LOAD_GUEST_PAT |
-- 
1.7.1


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