From f5209f91272295c6c3ee0cd5f9589baf93cd00e8 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Fri, 17 Dec 2021 16:38:15 +0800 Subject: [PATCH] iommu/vt-d: Drop duplicate check in dma_pte_free_pagetable() The BUG_ON check exists in dma_pte_clear_range(), kill the duplicate check. Signed-off-by: Kefeng Wang Link: https://lore.kernel.org/r/20211025032307.182974-1-wangkefeng.wang@huawei.com Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20211217083817.1745419-3-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel --- drivers/iommu/intel/iommu.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 16e5fe35b3dc..261d931ee76e 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1280,10 +1280,6 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain, unsigned long last_pfn, int retain_level) { - BUG_ON(!domain_pfn_supported(domain, start_pfn)); - BUG_ON(!domain_pfn_supported(domain, last_pfn)); - BUG_ON(start_pfn > last_pfn); - dma_pte_clear_range(domain, start_pfn, last_pfn); /* We don't need lock here; nobody else touches the iova range */