From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Alexander Graf Date: Thu, 9 Feb 2017 13:53:30 +0100 Message-Id: <1486644810-33181-5-git-send-email-agraf@suse.de> In-Reply-To: <1486644810-33181-1-git-send-email-agraf@suse.de> References: <1486644810-33181-1-git-send-email-agraf@suse.de> Subject: [Qemu-devel] [PATCH v2 4/4] hw/arm/virt: Declare fwcfg as dma cache coherent in dt List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, mst@redhat.com, Laszlo Ersek , Shannon Zhao , Ard Biesheuvel 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; } -- 2.10.0