From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59582) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aaSke-0001yC-Ta for qemu-devel@nongnu.org; Mon, 29 Feb 2016 13:41:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aaSkb-0007jm-Jk for qemu-devel@nongnu.org; Mon, 29 Feb 2016 13:41:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37333) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aaSkb-0007jc-EJ for qemu-devel@nongnu.org; Mon, 29 Feb 2016 13:40:57 -0500 From: Markus Armbruster Date: Mon, 29 Feb 2016 19:40:18 +0100 Message-Id: <1456771254-17511-3-git-send-email-armbru@redhat.com> In-Reply-To: <1456771254-17511-1-git-send-email-armbru@redhat.com> References: <1456771254-17511-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PATCH 02/38] qemu-doc: Fix ivshmem huge page example List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: claudio.fontana@huawei.com, cam@cs.ualberta.ca, mlureau@redhat.com, david.marchand@6wind.com, pbonzini@redhat.com 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 --- qemu-doc.texi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/qemu-doc.texi b/qemu-doc.texi index bc9dd13..65f3b29 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -1311,7 +1311,7 @@ Instead of specifying the 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 -- 2.4.3