From a85894cd779455fab0086cfcb5c9f65c3706e1c6 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Thu, 3 May 2018 15:25:17 +0200 Subject: [PATCH] iommu/vt-d: Use WARN_ON_ONCE instead of BUG_ON in qi_flush_dev_iotlb() A misaligned address is only worth a warning, and not stopping the while execution path with a BUG_ON(). Signed-off-by: Joerg Roedel --- drivers/iommu/dmar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index e4ae600..460bed4 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1345,7 +1345,7 @@ void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep, struct qi_desc desc; if (mask) { - BUG_ON(addr & ((1ULL << (VTD_PAGE_SHIFT + mask)) - 1)); + WARN_ON_ONCE(addr & ((1ULL << (VTD_PAGE_SHIFT + mask)) - 1)); addr |= (1ULL << (VTD_PAGE_SHIFT + mask - 1)) - 1; desc.high = QI_DEV_IOTLB_ADDR(addr) | QI_DEV_IOTLB_SIZE; } else -- 2.7.4