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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2021-01-19 05:35:00 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-01-28 13:17:08 +0100 |
| commit | 494b3688bb11a21af12e92a344a1313486693d47 (patch) | |
| tree | 4693110886cd298853d927738ea4dfc4c87613ca /drivers | |
| parent | iommu/amd: Use IVHD EFR for early initialization of IOMMU features (diff) | |
| download | linux-494b3688bb11a21af12e92a344a1313486693d47.tar.xz linux-494b3688bb11a21af12e92a344a1313486693d47.zip | |
iommu/vt-d: Correctly check addr alignment in qi_flush_dev_iotlb_pasid()
An incorrect address mask is being used in the qi_flush_dev_iotlb_pasid()
to check the address alignment. This leads to a lot of spurious kernel
warnings:
[ 485.837093] DMAR: Invalidate non-aligned address 7f76f47f9000, order 0
[ 485.837098] DMAR: Invalidate non-aligned address 7f76f47f9000, order 0
[ 492.494145] qi_flush_dev_iotlb_pasid: 5734 callbacks suppressed
[ 492.494147] DMAR: Invalidate non-aligned address 7f7728800000, order 11
[ 492.508965] DMAR: Invalidate non-aligned address 7f7728800000, order 11
Fix it by checking the alignment in right way.
Fixes: 288d08e780088 ("iommu/vt-d: Handle non-page aligned address")
Reported-and-tested-by: Guo Kaijie <Kaijie.Guo@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20210119043500.1539596-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 004feaed3c72..02e7c10a4224 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -1496,7 +1496,7 @@ void qi_flush_dev_iotlb_pasid(struct intel_iommu *iommu, u16 sid, u16 pfsid, * Max Invs Pending (MIP) is set to 0 for now until we have DIT in * ECAP. */ - if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) + if (!IS_ALIGNED(addr, VTD_PAGE_SIZE << size_order)) pr_warn_ratelimited("Invalidate non-aligned address %llx, order %d\n", addr, size_order); |