From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 11/19] iommu/vt-d: Don't disable translation prior to OS handover Date: Sat, 13 Jun 2015 08:47:19 +0200 Message-ID: <1434178047-17809-12-git-send-email-joro@8bytes.org> References: <1434178047-17809-1-git-send-email-joro@8bytes.org> Return-path: In-Reply-To: <1434178047-17809-1-git-send-email-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org To: iommu@lists.linux-foundation.org Cc: David Woodhouse , zhen-hual@hp.com, bhe@redhat.com, ddutile@redhat.com, alex.williamson@redhat.com, dyoung@redhat.com, linux-kernel@vger.kernel.org, jroedel@8bytes.org, joro@8bytes.org, Joerg Roedel List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel For all the copy-translation code to run, we have to keep translation enabled in intel_iommu_init(). So remove the code disabling it. Signed-off-by: Joerg Roedel --- drivers/iommu/intel-iommu.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index e23d5b4..b47def6 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4469,13 +4469,6 @@ int __init intel_iommu_init(void) goto out_free_dmar; } - /* - * Disable translation if already enabled prior to OS handover. - */ - for_each_active_iommu(iommu, drhd) - if (iommu->gcmd & DMA_GCMD_TE) - iommu_disable_translation(iommu); - if (dmar_dev_scope_init() < 0) { if (force_on) panic("tboot: Failed to initialize DMAR device scope\n"); -- 1.9.1