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Date: Sat, 13 Jun 2015 08:47:20 +0200 From: Joerg Roedel <joro@...tes.org> To: iommu@...ts.linux-foundation.org Cc: David Woodhouse <dwmw2@...radead.org>, zhen-hual@...com, bhe@...hat.com, ddutile@...hat.com, alex.williamson@...hat.com, dyoung@...hat.com, linux-kernel@...r.kernel.org, jroedel@...tes.org, joro@...tes.org, Joerg Roedel <jroedel@...e.de> Subject: [PATCH 12/19] iommu/vt-d: Enable Translation only if it was previously disabled From: Joerg Roedel <jroedel@...e.de> Do not touch the TE bit unless we know translation is disabled. Signed-off-by: Joerg Roedel <jroedel@...e.de> --- drivers/iommu/intel-iommu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index b47def6..ad72c6d 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3184,7 +3184,9 @@ domains_done: if (ret) goto free_iommu; - iommu_enable_translation(iommu); + if (!translation_pre_enabled(iommu)) + iommu_enable_translation(iommu); + iommu_disable_protect_mem_regions(iommu); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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