Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753100AbaKCLBz (ORCPT ); Mon, 3 Nov 2014 06:01:55 -0500 Received: from smtp.citrix.com ([66.165.176.89]:8439 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753077AbaKCLBv (ORCPT ); Mon, 3 Nov 2014 06:01:51 -0500 X-IronPort-AV: E=Sophos;i="5.07,307,1413244800"; d="scan'208";a="187467322" Message-ID: <5457609D.2000200@citrix.com> Date: Mon, 3 Nov 2014 11:01:49 +0000 From: David Vrabel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.5.0 MIME-Version: 1.0 To: Stefano Stabellini CC: , , , , Subject: Re: [Xen-devel] [PATCH v7 7/8] xen/arm/arm64: introduce xen_arch_need_swiotlb References: <1414422568-19103-7-git-send-email-stefano.stabellini@eu.citrix.com> In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/11/14 10:45, Stefano Stabellini wrote: > On Mon, 27 Oct 2014, Stefano Stabellini wrote: >> Introduce an arch specific function to find out whether a particular dma >> mapping operation needs to bounce on the swiotlb buffer. >> >> On ARM and ARM64, if the page involved is a foreign page and the device >> is not coherent, we need to bounce because at unmap time we cannot >> execute any required cache maintenance operations (we don't know how to >> find the pfn from the mfn). >> >> No change of behaviour for x86. >> >> Signed-off-by: Stefano Stabellini >> Acked-by: Ian Campbell > > Konrad, David, are you OK with the swiotlb-xen changes? Reviewed-by: David Vrabel But swiotlb is Konrad's responsibility. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/