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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2021-01-19 12:35:00 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-01-28 13:17:08 +0100 |
| commit | 494b3688bb11a21af12e92a344a1313486693d47 (patch) | |
| tree | 4693110886cd298853d927738ea4dfc4c87613ca /arch/s390 | |
| parent | a44092e326d403c7878018ba532369f84d31dbfa (diff) | |
| download | lwn-494b3688bb11a21af12e92a344a1313486693d47.tar.gz lwn-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 'arch/s390')
0 files changed, 0 insertions, 0 deletions