qemu-doc: Fix ivshmem huge page example

Option parameter "share" is missing.  Without it, you get a *private*
mmap(), which defeats ivshmem's purpose pretty thoroughly ;)

While there, switch to the conventional mountpoint of hugetlbfs
/dev/hugepages.

Signed-off-by: Markus Armbruster <[email protected]>
Reviewed-by: Marc-André Lureau <[email protected]>
Reviewed-by: Paolo Bonzini <[email protected]>
Message-Id: <1458066895[email protected]>

diff --git a/qemu-doc.texi b/qemu-doc.texi
index bc9dd13cc913d2a8d2192a157fc8a911b14598ce..65f3b2950676a69950c69f0d1aeb5ce675af9189 100644 (file)
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1311,7 +1311,7 @@ Instead of specifying the <shm size> using POSIX shm, you may specify
 a memory backend that has hugepage support:
 
 @example
-qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/mnt/hugepages/my-shmem-file,id=mb1
+qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/dev/hugepages/my-shmem-file,share,id=mb1
                  -device ivshmem,x-memdev=mb1
 @end example