From patchwork Fri Mar 18 17:00:51 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 8622281 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id EFFC1C0553 for ; Fri, 18 Mar 2016 17:08:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6B58F2026F for ; Fri, 18 Mar 2016 17:08:36 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C1B462022A for ; Fri, 18 Mar 2016 17:08:35 +0000 (UTC) Received: from localhost ([::1]:45084 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agxt5-0002yL-3J for patchwork-qemu-devel@patchwork.kernel.org; Fri, 18 Mar 2016 13:08:35 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41655) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agxmH-0006VP-UL for qemu-devel@nongnu.org; Fri, 18 Mar 2016 13:01:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1agxmE-00081d-0y for qemu-devel@nongnu.org; Fri, 18 Mar 2016 13:01:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55283) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agxmD-00081T-SW for qemu-devel@nongnu.org; Fri, 18 Mar 2016 13:01:29 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 76461C0641E9 for ; Fri, 18 Mar 2016 17:01:29 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-34.ams2.redhat.com [10.36.116.34]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u2IH1REP010037 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 18 Mar 2016 13:01:29 -0400 Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 8A6B53001102; Fri, 18 Mar 2016 18:01:27 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 18 Mar 2016 18:00:51 +0100 Message-Id: <1458320487-19603-5-git-send-email-armbru@redhat.com> In-Reply-To: <1458320487-19603-1-git-send-email-armbru@redhat.com> References: <1458320487-19603-1-git-send-email-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 04/40] qemu-doc: Fix ivshmem huge page example X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Reviewed-by: Marc-André Lureau Reviewed-by: Paolo Bonzini Message-Id: <1458066895-20632-5-git-send-email-armbru@redhat.com> --- 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