Changeset 76196 in vbox for trunk/include

Timestamp:

Dec 12, 2018 7:24:05 PM (6 years ago)

Author:

vboxsync

Message:

VMMDev/HGCM,VBoxGuest: New page list variant for more effectively passing physical contiguous buffers (VbglR0PhysHeapAlloc, kmalloc, ++). bugref:9172

Location:

trunk/include/VBox

Files:

• VMMDev.h (modified) (1 diff)
• VMMDevCoreTypes.h (modified) (1 diff)

trunk/include/VBox/VMMDev.h

@@ -541 +541 @@
  * @{ */
 /** Physical page lists are supported by HGCM. */
-#define VMMDEV_HVF_HGCM_PHYS_PAGE_LIST      RT_BIT_32(0)
+#define VMMDEV_HVF_HGCM_PHYS_PAGE_LIST          RT_BIT_32(0)
 /** HGCM supports the embedded buffer parameter type. */
-#define VMMDEV_HVF_HGCM_EMBEDDED_BUFFERS    RT_BIT_32(1)
+#define VMMDEV_HVF_HGCM_EMBEDDED_BUFFERS        RT_BIT_32(1)
+/** HGCM supports the contiguous page list parameter type. */
+#define VMMDEV_HVF_HGCM_CONTIGUOUS_PAGE_LIST    RT_BIT_32(2)
 /** VMMDev supports fast IRQ acknowledgements. */
-#define VMMDEV_HVF_FAST_IRQ_ACK             RT_BIT_32(31)
+#define VMMDEV_HVF_FAST_IRQ_ACK                 RT_BIT_32(31)
 /** @} */
 

trunk/include/VBox/VMMDevCoreTypes.h

@@ -275 +275 @@
     VMMDevHGCMParmType_PageList           = 10, /**< Physical addresses of locked pages for a buffer. */
     VMMDevHGCMParmType_Embedded           = 11, /**< Small buffer embedded in request. */
+    VMMDevHGCMParmType_ContiguousPageList = 12, /**< Like PageList but with physically contiguous memory, so only one page entry. */
     VMMDevHGCMParmType_SizeHack           = 0x7fffffff
 } HGCMFunctionParameterType;