Changeset 89973 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Jun 30, 2021 11:00:18 AM (4 years ago)

Author:

vboxsync

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

145432

Message:

IEM: xchg sets X86_TRAP_PF_RW, see bs3-cpu-basic-2.

File:

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

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

@@ -5902 +5902 @@
     if (fAccess & IEM_ACCESS_TYPE_WRITE)
     {
-        if (!(fAccess & IEM_ACCESS_TYPE_READ))
+        /// @todo r=bird: bs3-cpu-basic-2 wants X86_TRAP_PF_RW for xchg and cmpxchg
+        /// (regardless of outcome of the comparison in the latter case).
+        //if (!(fAccess & IEM_ACCESS_TYPE_READ))
             uErr |= X86_TRAP_PF_RW;
     }