hvm hap: Add hap option to user's manual.

Signed-off-by: Wei Huang <wei.huang2@amd.com>

diff --git a/docs/src/user.tex b/docs/src/user.tex
index 6706a31acb4b8ded060dc16c0c1e9cdeab014a42..52daba7add803d6e0592c36124d2a60487679e74 100644 (file)
--- a/docs/src/user.tex
+++ b/docs/src/user.tex
@@ -3250,6 +3250,10 @@ editing \path{grub.conf}.
 \item [ dma\_emergency\_pool=xxx ] Specify lower bound on size of DMA
   pool below which ordinary allocations will fail rather than fall
   back to allocating from the DMA pool.
+\item [ hap ] Instruct Xen to detect hardware-assisted paging support, such
+  as AMD-V's nested paging or Intel\textregistered VT's extended paging. If 
+  available, Xen will use hardware-assisted paging instead of shadow paging 
+  for guest memory management.
 \end{description}
 
 In addition, the following options may be specified on the Xen command