Changeset 59179 in vbox for trunk/src/VBox/Additions/common

Timestamp:

Dec 18, 2015 8:51:00 AM (9 years ago)

Author:

vboxsync

Message:

Additions: ASMCompilerBarrier for HGSMI IO port writes

File:

• trunk/src/VBox/Additions/common/VBoxVideo/HGSMIBase.cpp (modified) (1 diff)

trunk/src/VBox/Additions/common/VBoxVideo/HGSMIBase.cpp

@@ -170 +170 @@
         /* Submit the buffer to the host. */
         VBoxVideoCmnPortWriteUlong(pCtx->port, offBuffer);
+        /* Make the compiler aware that the host has changed memory. */
+        ASMCompilerBarrier();
         return VINF_SUCCESS;
     }