From: Lu Baolu <baolu.lu@linux.intel.com>
Date: Mon, 22 Jun 2020 23:13:45 +0000 (+0800)
Subject: iommu/vt-d: Fix misuse of iommu_domain_identity_map()
X-Git-Tag: v5.15~3506^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=48f0bcfb7aad2c6eb4c1e66476b58475aa14393e;p=platform%2Fkernel%2Flinux-starfive.git

iommu/vt-d: Fix misuse of iommu_domain_identity_map()

The iommu_domain_identity_map() helper takes start/end PFN as arguments.
Fix a misuse case where the start and end addresses are passed.

Fixes: e70b081c6f376 ("iommu/vt-d: Remove IOVA handling code from the non-dma_ops path")
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Cc: Tom Murphy <murphyt7@tcd.ie>
Link: https://lore.kernel.org/r/20200622231345.29722-7-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index f16bf63..d759e72 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -2701,7 +2701,9 @@ static int __init si_domain_init(int hw)
 				    end >> agaw_to_width(si_domain->agaw)))
 				continue;
 
-			ret = iommu_domain_identity_map(si_domain, start, end);
+			ret = iommu_domain_identity_map(si_domain,
+					mm_to_dma_pfn(start >> PAGE_SHIFT),
+					mm_to_dma_pfn(end >> PAGE_SHIFT));
 			if (ret)
 				return ret;
 		}