From patchwork Thu Feb 9 12:53:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 9564473 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AAB7060216 for ; Thu, 9 Feb 2017 12:57:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8D1672768C for ; Thu, 9 Feb 2017 12:57:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 81AE128358; Thu, 9 Feb 2017 12:57:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 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.wl.linuxfoundation.org (Postfix) with ESMTPS id 123312768C for ; Thu, 9 Feb 2017 12:57:22 +0000 (UTC) Received: from localhost ([::1]:37448 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cboHp-0005bz-QC for patchwork-qemu-devel@patchwork.kernel.org; Thu, 09 Feb 2017 07:57:21 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59190) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cboDy-0002bf-TX for qemu-devel@nongnu.org; Thu, 09 Feb 2017 07:53:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cboDy-0007QD-Ah for qemu-devel@nongnu.org; Thu, 09 Feb 2017 07:53:23 -0500 Received: from mx2.suse.de ([195.135.220.15]:54717) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cboDs-0007O3-6y; Thu, 09 Feb 2017 07:53:16 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 0B92EADB2; Thu, 9 Feb 2017 12:53:15 +0000 (UTC) From: Alexander Graf To: qemu-devel@nongnu.org Date: Thu, 9 Feb 2017 13:53:30 +0100 Message-Id: <1486644810-33181-5-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.8.5.6 In-Reply-To: <1486644810-33181-1-git-send-email-agraf@suse.de> References: <1486644810-33181-1-git-send-email-agraf@suse.de> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-Received-From: 195.135.220.15 Subject: [Qemu-devel] [PATCH v2 4/4] hw/arm/virt: Declare fwcfg as dma cache coherent in dt X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ard Biesheuvel , qemu-arm@nongnu.org, Laszlo Ersek , Shannon Zhao , mst@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Fw-cfg recently learned how to directly access guest memory and does so in cache coherent fashion. Tell the guest about that fact when it's using DT. Signed-off-by: Alexander Graf --- hw/arm/virt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 14881fa..da9622f 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -929,6 +929,7 @@ static FWCfgState *create_fw_cfg(const VirtMachineState *vms, AddressSpace *as) "compatible", "qemu,fw-cfg-mmio"); qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 2, base, 2, size); + qemu_fdt_setprop(vms->fdt, nodename, "dma-coherent", NULL, 0); g_free(nodename); return fw_cfg; }