From: amd <[email protected]> The extent of pages specified when applying a reserved region should include up to the last page of the range, but not the page following the range.
Signed-off-by: Gary R Hook <[email protected]> --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 27eb0d6fcdc2..bb3ef33e3784 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3271,7 +3271,7 @@ static void amd_iommu_apply_resv_region(struct device *dev, unsigned long start, end; start = IOVA_PFN(region->start); - end = IOVA_PFN(region->start + region->length); + end = IOVA_PFN(region->start + region->length - 1); WARN_ON_ONCE(reserve_iova(&dma_dom->iovad, start, end) == NULL); }
