Changeset 75585 in vbox for trunk/src/VBox/VMM/VMMR3

Timestamp:

Nov 19, 2018 6:03:23 PM (6 years ago)

Author:

vboxsync

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

126753

Message:

VMMDev,PGM: New I/O port for ACKing IRQs and retreiving pending events. This is handled in ring-0/raw-mode and saves a bit of time compared to the ring-3 trip we've been doing for VMMDevReq_AcknowledgeEvents thus far. Requires the start of the VMMDev memory being mapped into R00/RC, the former requires some hacks on linux+windows as RTR0MemObjMapKernelEx is missing some functionality here. bugref:9172

File:

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

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

@@ -3877 +3877 @@
      * Pass the request on to the support library/driver.
      */
-    int rc = SUPR3PageMapKernel(pFirstRegMmio->pvR3, off, cb, 0, pR0Ptr);
+#if defined(RT_OS_WINDOWS) || defined(RT_OS_LINUX) || defined(RT_OS_OS2) /** @todo Fully implement RTR0MemObjMapKernelEx everywhere. */
+    AssertLogRelReturn(off == 0, VERR_NOT_SUPPORTED);
+    AssertLogRelReturn(pFirstRegMmio->fFlags & PGMREGMMIORANGE_F_LAST_CHUNK, VERR_NOT_SUPPORTED);
+    int rc = SUPR3PageMapKernel(pFirstRegMmio->pvR3, 0 /*off*/, pFirstRegMmio->RamRange.cb, 0 /*fFlags*/, pR0Ptr);
+#else
+    int rc = SUPR3PageMapKernel(pFirstRegMmio->pvR3, off, cb, 0 /*fFlags*/, pR0Ptr);
+#endif
 
     return rc;