Changeset 102755 in vbox for trunk/src/VBox/VMM

Timestamp:

Jan 3, 2024 6:58:23 PM (13 months ago)

Author:

vboxsync

Message:

VMM/IEM: Fixed accidental fGstShwFlush truncation in iemNativeRecompFunc_BltIn_DeferToCImpl0 causing swapgs and others not to clobber the necessary register shadows. bugref:10371

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllN8veRecompBltIn.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAllN8veRecompBltIn.cpp

@@ -164 +164 @@
     PFNIEMCIMPL0 const pfnCImpl     = (PFNIEMCIMPL0)(uintptr_t)pCallEntry->auParams[0];
     uint8_t const      cbInstr      = (uint8_t)pCallEntry->auParams[1];
-    uint64_t const     fGstShwFlush = (uint8_t)pCallEntry->auParams[2];
+    uint64_t const     fGstShwFlush = pCallEntry->auParams[2];
     return iemNativeEmitCImplCall(pReNative, off, pCallEntry->idxInstr, fGstShwFlush, (uintptr_t)pfnCImpl, cbInstr, 0, 0, 0, 0);
 }