Fix the size check within start_pfn and limit_pfn.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
the issue was observed when playing with 1 page iova domain with
higher iova reserved.
---
drivers/iommu/iova.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
index e23001b..ee29dbf 100644
--- a/drivers/iommu/iova.c
+++ b/drivers/iommu/iova.c
@@ -147,7 +147,7 @@ static int __alloc_and_insert_iova_range(struct iova_domain *iovad,
if (!curr) {
if (size_aligned)
pad_size = iova_get_pad_size(size, limit_pfn);
- if ((iovad->start_pfn + size + pad_size) > limit_pfn) {
+ if ((iovad->start_pfn + size + pad_size - 1) > limit_pfn) {
spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
return -ENOMEM;
}
--
1.9.1
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