Changeset 15734 in vbox

Timestamp:

Dec 23, 2008 3:18:48 PM (16 years ago)

Author:

vboxsync

Message:

Allow up to 1M clock ticks worth of guest execution.

File:

• trunk/src/VBox/VMM/VMMR0/HWVMXR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HWVMXR0.cpp

@@ -3581 +3581 @@
     aParam[5] = 0;
 
-    if (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls.n.allowed1 & VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_PREEMPT_TIMER)
+    Assert(!(pVM->hwaccm.s.vmx.msr.vmx_pin_ctls.n.allowed1 & VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_PREEMPT_TIMER) || MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hwaccm.s.vmx.msr.vmx_misc));
+    if (    (pVM->hwaccm.s.vmx.msr.vmx_pin_ctls.n.allowed1 & VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_PREEMPT_TIMER)
+        &&  MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hwaccm.s.vmx.msr.vmx_misc))
     {
         uint32_t val;
@@ -3591 +3593 @@
         AssertRC(rc);
 
-        VMXWriteVMCS(VMX_VMCS32_GUEST_PREEMPTION_TIMER_VALUE, 0x10000);
+        val = MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hwaccm.s.vmx.msr.vmx_misc);
+        val = 1000000 / val;
+        VMXWriteVMCS(VMX_VMCS32_GUEST_PREEMPTION_TIMER_VALUE, val);
     }