Changeset 93582 in vbox for trunk/src/VBox/VMM/VMMR3

Timestamp:

Feb 3, 2022 2:15:58 PM (3 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

149718

Message:

VMM/{VMXAllTemplate.cpp.h,NEMR3Native-darwin.cpp}: Temporarily intercept all CR3 accesses to investigate an issue with 32bit guests where we seem to end up with an invalid page table root address under certain circumstances, bugref:9044

File:

• trunk/src/VBox/VMM/VMMR3/NEMR3Native-darwin.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR3/NEMR3Native-darwin.cpp

@@ -1327 +1327 @@
 //#define HMVMX_ALWAYS_TRAP_ALL_XCPTS
 //#define HMVMX_ALWAYS_SYNC_FULL_GUEST_STATE
+#define HMVMX_ALAWAYS_INTERCEPT_CR3_ACCESS /* Temporary to investigate an issue with 32bit guests whete seem to end up with an invalid page table root address. */
 #define VCPU_2_VMXSTATE(a_pVCpu)            (a_pVCpu)->nem.s
 #define VCPU_2_VMXSTATS(a_pVCpu)            (*(a_pVCpu)->nem.s.pVmxStats)
@@ -2190 +2191 @@
          |  VMX_PROC_CTLS_MWAIT_EXIT;                                 /* MWAIT causes a VM-exit. */
 
+#ifdef HMVMX_ALAWAYS_INTERCEPT_CR3_ACCESS
+    fVal |= VMX_PROC_CTLS_CR3_LOAD_EXIT
+         |  VMX_PROC_CTLS_CR3_STORE_EXIT;
+#endif
+
     /* We toggle VMX_PROC_CTLS_MOV_DR_EXIT later, check if it's not -always- needed to be set or clear. */
     if (   !(g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_MOV_DR_EXIT)