Changeset 15419 in vbox for trunk/src

Timestamp:

Dec 13, 2008 7:01:33 AM (16 years ago)

Author:

vboxsync

Message:

EMAll: Corrected PGMVerifyAccess call in the STOSDW emulation to pass the correct X86_PTE_US flag. Vista64 took a lot of REMR3EmulateInstruction fallbacks because of this.

File:

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

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

@@ -1358 +1358 @@
         LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d cTransfers=%x DF=%d\n", pRegFrame->es, GCOffset, GCDest, cbSize, cTransfers, pRegFrame->eflags.Bits.u1DF));
         /* Access verification first; we currently can't recover properly from traps inside this instruction */
-        rc = PGMVerifyAccess(pVM, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)), cTransfers * cbSize, X86_PTE_RW | X86_PTE_US);
+        rc = PGMVerifyAccess(pVM, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)),
+                             cTransfers * cbSize,
+                             X86_PTE_RW | (CPUMGetGuestCPL(pVM, pRegFrame) == 3 ? X86_PTE_US : 0));
         if (rc != VINF_SUCCESS)
         {