iommu/vt-d: Don't disable translation prior to OS handover



For all the copy-translation code to run, we have to keep
translation enabled in intel_iommu_init(). So remove the
code disabling it.

Tested-by: ZhenHua Li <zhen-hual@hp.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent c3361f2f

drivers/iommu/intel-iommu.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -4484,13 +4484,6 @@ 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");