[Xen-changelog] [xen-unstable] nested vmx: enable IA32E mode while do VM entry

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
# Date 1354813046 0
# Node ID 1ed1507fa0407f1da715d04fe1b510e81ca4fb31
# Parent  e6eb1e52da7cfcb1a7697b35b4d842f35107d1ed
nested vmx: enable IA32E mode while do VM entry

Some VMMs may check the platform capability to judge whether long
mode guest is supported. Therefore we need to expose this bit to
guest VMM.

Xen on Xen works fine in current solution because Xen doesn't
check this capability but directly set it in VMCS if guest
supports long mode.

Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Committed-by: Keir Fraser <keir@xxxxxxx>
---


diff -r e6eb1e52da7c -r 1ed1507fa040 xen/arch/x86/hvm/vmx/vvmx.c
--- a/xen/arch/x86/hvm/vmx/vvmx.c       Thu Dec 06 16:56:49 2012 +0000
+++ b/xen/arch/x86/hvm/vmx/vvmx.c       Thu Dec 06 16:57:26 2012 +0000
@@ -1376,7 +1376,8 @@ int nvmx_msr_read_intercept(unsigned int
         tmp = VMX_ENTRY_CTLS_DEFAULT1;
         data = VM_ENTRY_LOAD_GUEST_PAT |
                VM_ENTRY_LOAD_GUEST_EFER |
-               VM_ENTRY_LOAD_PERF_GLOBAL_CTRL;
+               VM_ENTRY_LOAD_PERF_GLOBAL_CTRL |
+               VM_ENTRY_IA32E_MODE;
         data = ((data | tmp) << 32) | tmp;
         break;
 

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