Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755279AbaBTQUr (ORCPT ); Thu, 20 Feb 2014 11:20:47 -0500 Received: from mail-ea0-f176.google.com ([209.85.215.176]:37054 "EHLO mail-ea0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753552AbaBTQUp (ORCPT ); Thu, 20 Feb 2014 11:20:45 -0500 From: Julien Grall To: linux-kernel@vger.kernel.org, stefano.stabellini@eu.citrix.com Cc: linux-arm-kernel@lists.infradead.org, ian.campbell@citrix.com, xen-devel@lists.xenproject.org, Julien Grall Subject: [PATCH 0/2] Avoid to use Xen DMA ops when the device is protected by an IOMMU Date: Thu, 20 Feb 2014 16:20:32 +0000 Message-Id: <1392913234-25429-1-git-send-email-julien.grall@linaro.org> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello all This small patch series allows Xen guest to be used when Xen is programming the IOMMUs. For this purpose, I have added a new optional property "protected-devices" which list the devices protected by an IOMMU. The first patch create a new helper which will contain Xen specific check to know if we might need to use swiotlb-xen. The second patch is implementing the goal of this patch series. Regards, Julien Grall (2): arm/xen: Introduce need_xen_dma_ops and use it in get_dma_ops arm/xen: Don't use xen DMA ops when the device is protected by an IOMMU Documentation/devicetree/bindings/arm/xen.txt | 2 + arch/arm/include/asm/dma-mapping.h | 5 +- arch/arm/include/asm/xen/dma-mapping.h | 22 ++++++++ arch/arm/include/asm/xen/hypervisor.h | 2 - arch/arm/xen/enlighten.c | 75 +++++++++++++++++++++++++ 5 files changed, 101 insertions(+), 5 deletions(-) create mode 100644 arch/arm/include/asm/xen/dma-mapping.h -- 1.7.10.4 -- 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/