Changeset 74619 in vbox for trunk/src

Timestamp:

Oct 5, 2018 3:37:25 AM (6 years ago)

Author:

vboxsync

Message:

VMM/IEM: Nested VMX: bugref:9180 Remove iemVmxGetMaskedCr0.

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h

@@ -942 +942 @@
 
 
-
-/**
- * Gets the nested-guest CR4 mask subjected to the CR0 guest/host mask and the CR4
- * read-shadow.
- *
- * @returns The masked CR0.
- * @param   pVCpu       The cross context virtual CPU structure.
- * @param   uGuestCr0   The guest CR0.
- */
-IEM_STATIC uint64_t iemVmxGetMaskedCr0(PVMCPU pVCpu, uint64_t uGuestCr0)
-{
-    PCVMXVVMCS pVmcs = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
-    Assert(pVmcs);
-    Assert(IEM_VMX_IS_NON_ROOT_MODE(pVCpu));
-
-    /*
-     * For each CR0 bit owned by the host, the corresponding bit is loaded from the
-     * CR0-read shadow. For each CR0 bit that is not owned by the host, the corresponding
-     * bit from the guest CR0 is loaded.
-     *
-     * See Intel Spec. 25.3 "Changes To Instruction Behavior In VMX Non-root Operation".
-     */
-    uint64_t const fGstHostMask = pVmcs->u64Cr0Mask.u;
-    uint64_t const fReadShadow  = pVmcs->u64Cr0ReadShadow.u;
-    uint64_t const fMaskedCr0   = (fReadShadow & fGstHostMask) | (uGuestCr0 & ~fGstHostMask);
-
-    return fMaskedCr0;
-}
-
-
 /**
  * Gets VM-exit instruction information along with any displacement for an