diff options
| author | Niklas Schnelle <[email protected]> | 2022-10-25 13:56:55 +0200 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2022-11-03 15:40:54 +0100 |
| commit | a4d996c2c4b55a42b21d0f7026b2bd6f7396f666 (patch) | |
| tree | f560a74306af84087997bfe3ec27fc3da9b7a4e1 | |
| parent | cbf7827bc5dcfa4301aaea6f57eba9a94dbee7b1 (diff) | |
iommu/s390: Fix incorrect aperture check
The domain->geometry.aperture_end specifies the last valid address treat
it as such when checking if a DMA address is valid.
Reviewed-by: Pierre Morel <[email protected]>
Reviewed-by: Matthew Rosato <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Signed-off-by: Niklas Schnelle <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
| -rw-r--r-- | drivers/iommu/s390-iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index 9b3adc61005c..3e601ca6ee0f 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -213,7 +213,7 @@ static int s390_iommu_update_trans(struct s390_domain *s390_domain, int rc = 0; if (dma_addr < s390_domain->domain.geometry.aperture_start || - dma_addr + size > s390_domain->domain.geometry.aperture_end) + (dma_addr + size - 1) > s390_domain->domain.geometry.aperture_end) return -EINVAL; nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; |