Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934306AbcKONLU (ORCPT ); Tue, 15 Nov 2016 08:11:20 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51992 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754349AbcKONJu (ORCPT ); Tue, 15 Nov 2016 08:09:50 -0500 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, christoffer.dall@linaro.org, marc.zyngier@arm.com, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, drjones@redhat.com, linux-kernel@vger.kernel.org, pranav.sawargaonkar@gmail.com, iommu@lists.linux-foundation.org, punit.agrawal@arm.com, diana.craciun@nxp.com Subject: [RFC v3 05/10] iommu: Do not map reserved regions Date: Tue, 15 Nov 2016 13:09:18 +0000 Message-Id: <1479215363-2898-6-git-send-email-eric.auger@redhat.com> In-Reply-To: <1479215363-2898-1-git-send-email-eric.auger@redhat.com> References: <1479215363-2898-1-git-send-email-eric.auger@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 15 Nov 2016 13:09:50 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 717 Lines: 24 As we introduced IOMMU_RESV_NOMAP and IOMMU_RESV_MSI regions, let's prevent those new regions from being mapped. Signed-off-by: Eric Auger --- drivers/iommu/iommu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 6ee529f..a4530ad 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -343,6 +343,9 @@ static int iommu_group_create_direct_mappings(struct iommu_group *group, start = ALIGN(entry->start, pg_size); end = ALIGN(entry->start + entry->length, pg_size); + if (entry->prot & IOMMU_RESV_MASK) + continue; + for (addr = start; addr < end; addr += pg_size) { phys_addr_t phys_addr; -- 1.9.1