From 201a5aaf4bf61cecfbdaa296ddd76cd0aec04bf6 Mon Sep 17 00:00:00 2001
From: Gabor Pali A VT-d driver was developed that implements the
- busdma(9) interface using the DMA Remap units (DMARs)
- found in current Intel chipsets. The driver provides
- reliability and security improvements for the system by
- facilitating restricted access to main memory from busmastering
- devices. Intel VT-d is a set of extensions that were originally designed
+ to allow virtualizing devices. It allows safe access to physical
+ devices from virtual machines and can also be used for better
+ isolation and performance increases. A VT-d driver was
+ developed that implements the busdma(9) interface using
+ the DMA Remap units (DMARs) found in current Intel chipsets.
+ The driver provides reliability and security improvements for
+ the system by facilitating restricted access to main memory from
+ busmastering devices. It also eliminates bounce buffering (copying) by allocating
remapped regions that satisfy a device's access limitations.
This project is sponsored by the &os; Foundation.
+This project is sponsored by The &os; Foundation.
Testing on diverse workloads and on real multi-socket machines is required.
-This project is sponsored by the &os; Foundation.
+This project is sponsored by The &os; Foundation.