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Subject[PATCH 1/1] iommu/vt-d: Fix misuse of iommu_domain_identity_map()
Date
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")
Cc: Tom Murphy <murphyt7@tcd.ie>
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
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 f16bf63ea9fd..d759e7234e98 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;
}
--
2.17.1
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