Changeset 100804 in vbox for trunk/src/VBox/VMM/VMMR3

Timestamp:

Aug 5, 2023 1:01:32 AM (19 months ago)

Author:

vboxsync

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

158696

Message:

VMM/IEM: Made the rep-prefixed string instructions return new status code VINF_IEM_YIELD_PENDING_FF if they yield and does not update RIP. This will avoid trouble in the recompiler as any non-zero status code will stop TB execution. This is more efficient than generating extra checks on the RIP value or something in the TB. The IEM_CIMPL_F_REP annotated instructions no longer need to trigger an end-of-tb. Annotate I/O instructions in case it comes in handy. bugref:10369

File:

• trunk/src/VBox/VMM/VMMR3/EM.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/EM.cpp

@@ -206 +206 @@
     /** @cfgm{/EM/IemRecompiled, bool, true}
      * Whether IEM bulk execution is recompiled or interpreted. */
-    rc = CFGMR3QueryBoolDef(pCfgEM, "IemRecompiled", &pVM->em.s.fIemRecompiled, true);
+    rc = CFGMR3QueryBoolDef(pCfgEM, "IemRecompiled", &pVM->em.s.fIemRecompiled, false);
     AssertLogRelRCReturn(rc, rc);
 #endif