Changeset 102850 in vbox for trunk/src/VBox/VMM/VMMAll/IEMAll.cpp

Timestamp:

Jan 12, 2024 12:47:47 AM (11 months ago)

Author:

vboxsync

Message:

VMM/IEM: Implemented the first of two code TLB lookups. bugref:10371

File:

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

trunk/src/VBox/VMM/VMMAll/IEMAll.cpp

@@ -965 +965 @@
                 iemRaisePageFaultJmp(pVCpu, GCPtrFirst, 1, IEM_ACCESS_INSTRUCTION, VERR_ACCESS_DENIED);
             }
+        }
+
+        /*
+         * Set the accessed flags.
+         * ASSUMES this is set when the address is translated rather than on commit...
+         */
+        /** @todo testcase: check when the A bit are actually set by the CPU for code. */
+        if (pTlbe->fFlagsAndPhysRev & IEMTLBE_F_PT_NO_ACCESSED)
+        {
+            int rc2 = PGMGstModifyPage(pVCpu, GCPtrFirst, 1, X86_PTE_A, ~(uint64_t)X86_PTE_A);
+            AssertRC(rc2);
+            /** @todo Nested VMX: Accessed/dirty bit currently not supported, asserted below. */
+            Assert(!(CPUMGetGuestIa32VmxEptVpidCap(pVCpu) & VMX_BF_EPT_VPID_CAP_ACCESS_DIRTY_MASK));
+            pTlbe->fFlagsAndPhysRev &= ~IEMTLBE_F_PT_NO_ACCESSED;
         }