Commit a4d996c2 authored by Niklas Schnelle's avatar Niklas Schnelle Committed by Joerg Roedel
Browse files

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: default avatarPierre Morel <pmorel@linux.ibm.com>
Reviewed-by: default avatarMatthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: default avatarNiklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20221025115657.1666860-5-schnelle@linux.ibm.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent cbf7827b

drivers/iommu/s390-iommu.c

+1 −1
Original line number Diff line number Diff line
@@ -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;