diff mbox

[PULL,v3,51/51] doc: document ivshmem & hugepages

Message ID 1444746378-12338-52-git-send-email-marcandre.lureau@redhat.com
State New
Headers show

Commit Message

Marc-André Lureau Oct. 13, 2015, 2:26 p.m. UTC 
From: Marc-André Lureau <marcandre.lureau@redhat.com>

Document and give some examples of hugepages support with ivshmem device
and server.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 qemu-doc.texi | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox

Patch

diff --git a/qemu-doc.texi b/qemu-doc.texi
index afa2263..3126abd 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1293,6 +1293,19 @@  copy the shared memory on migration to the destination host.  With
 With the @option{peer} case, the device should be detached and then reattached
 after migration using the PCI hotplug support.
 
+@subsubsection ivshmem and hugepages
+
+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,id=mb1
+                 -device ivshmem,memdev=mb1
+@end example
+
+ivshmem-server also supports hugepages mount points with the
+@option{-m} memory path argument.
+
 @node direct_linux_boot
 @section Direct Linux Boot