From: Markus Armbruster <armbru@redhat.com>
Date: Tue, 15 Mar 2016 18:34:19 +0000 (+0100)
Subject: qemu-doc: Fix ivshmem huge page example
X-Git-Tag: v2.6.0-rc0~16^2~36
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ad4929384b64ffc9908915fd40cb80f455835d4a;p=thirdparty%2Fqemu.git

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 <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-5-git-send-email-armbru@redhat.com>
---

diff --git a/qemu-doc.texi b/qemu-doc.texi
index bc9dd13cc91..65f3b295067 100644
--- 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