[Xen-devel] [PATCH 6/9] nested vmx: enable save VMX-preemption timer feature for L1 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, 4 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index e5d812a..9839642 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -530,8 +530,7 @@ static void nvmx_update_exit_control(struct vcpu *v, 
unsigned long host_cntrl)
     shadow_cntrl = __get_vvmcs(nvcpu->nv_vvmcx, VM_EXIT_CONTROLS);
     shadow_cntrl &= ~(VM_EXIT_SAVE_DEBUG_CNTRLS 
                       | VM_EXIT_SAVE_GUEST_PAT
-                      | VM_EXIT_SAVE_GUEST_EFER
-                      | VM_EXIT_SAVE_PREEMPT_TIMER);
+                      | VM_EXIT_SAVE_GUEST_EFER);
     shadow_cntrl |= host_cntrl;
     __vmwrite(VM_EXIT_CONTROLS, shadow_cntrl);
 }
@@ -1318,8 +1317,9 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
*msr_content)
         /* 1-seetings */
         /* bit 0-8, 10,11,13,14,16,17 must be 1 (refer G4 of SDM) */
         tmp = 0x36dff;
-        data = VM_EXIT_ACK_INTR_ON_EXIT;
-        data |= VM_EXIT_IA32E_MODE;
+        data = VM_EXIT_ACK_INTR_ON_EXIT |
+               VM_EXIT_IA32E_MODE |
+               VM_EXIT_SAVE_PREEMPT_TIMER;
        /* 0-settings */
         data = ((data | tmp) << 32) | tmp;
         break;
-- 
1.7.1


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