From 39b3204e54c18fe32663e7c9525b52d30419b717 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Thu, 31 Dec 2020 08:53:19 +0800 Subject: [PATCH] iommu/vt-d: Fix misuse of ALIGN in qi_flush_piotlb() commit 1efd17e7acb6692bffc6c58718f41f27fdfd62f5 upstream. Use IS_ALIGNED() instead. Otherwise, an unaligned address will be ignored. Fixes: 33cd6e642d6a ("iommu/vt-d: Flush PASID-based iotlb for iova over first level") Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20201231005323.2178523-1-baolu.lu@linux.intel.com Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- drivers/iommu/intel/dmar.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index b46dbfa6..004feae 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -1461,8 +1461,8 @@ void qi_flush_piotlb(struct intel_iommu *iommu, u16 did, u32 pasid, u64 addr, int mask = ilog2(__roundup_pow_of_two(npages)); unsigned long align = (1ULL << (VTD_PAGE_SHIFT + mask)); - if (WARN_ON_ONCE(!ALIGN(addr, align))) - addr &= ~(align - 1); + if (WARN_ON_ONCE(!IS_ALIGNED(addr, align))) + addr = ALIGN_DOWN(addr, align); desc.qw0 = QI_EIOTLB_PASID(pasid) | QI_EIOTLB_DID(did) | -- 2.7.4