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authorJoerg Roedel <jroedel@suse.de>2015-06-12 12:44:33 +0200
committerJoerg Roedel <jroedel@suse.de>2015-06-16 10:59:35 +0200
commit60b523ecfede05796aa77024b3960fecabab4de7 (patch)
tree9423c762d5cb70996894cdf6ebf4befe88227e77 /drivers/iommu
parentc3361f2f6e1d64bc7e7b8148bbd1c66b8007a898 (diff)
downloadlinux-60b523ecfede05796aa77024b3960fecabab4de7.tar.bz2
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>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel-iommu.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index ca7d37c3981f..e40c858a84fe 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -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");