Changeset 24852 in vbox for trunk

Timestamp:

Nov 22, 2009 4:24:38 AM (15 years ago)

Author:

vboxsync

Message:

CPUM.cpp/cpumR3LoadExec: Hack for missing G=1 in csHid on AMD-V. #4481.

File:

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

trunk/src/VBox/VMM/CPUM.cpp

@@ -1948 +1948 @@
                 if (uVersion >= CPUM_SAVED_STATE_VERSION_VER3_0)
                     SSMR3GetMem(pSSM, &pVM->aCpus[i].cpum.s.GuestMsr, sizeof(pVM->aCpus[i].cpum.s.GuestMsr));
+
+                /*
+                 * HACK ALERT! Workaround for missing granularity flag in CS on
+                 *             AMD-v.  This will cause trouble if the host now
+                 *             is using VT-x (teleporting, cold migration).
+                 * May consider moving this into SVM_READ_SELREG or there about.
+                 */
+                if (    !pVM->aCpus[i].cpum.s.Guest.csHid.Attr.n.u1Granularity
+                    &&   pVM->aCpus[i].cpum.s.Guest.csHid.u32Limit > UINT16_MAX)
+                    pVM->aCpus[i].cpum.s.Guest.csHid.Attr.n.u1Granularity = 1;
             }
         }