[Xen-devel] [PATCH 1/3] nested vmx: emulate IA32_VMX_MISC MSR

[Dongxiao Xu <dongxiao.xu@xxxxxxxxx>]

Use the host value to emulate IA32_VMX_MISC MSR for L1 VMM.
For CR3-target value, we don't support this feature currently and
set the number to zero.

Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vvmx.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index 7b27d2d..0a876b0 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -1462,7 +1462,8 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
         data = 0x267ff & ~X86_CR4_SMXE;
         break;
     case MSR_IA32_VMX_MISC:
-        gdprintk(XENLOG_WARNING, "VMX MSR %x not fully supported yet.\n", msr);
+        /* Do not support CR3-target feature now */
+        data = host_data & ~(0x1ff << 16);
         break;
     default:
         r = 0;
-- 
1.7.1


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