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| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2022-10-25 14:56:56 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-11-03 17:40:54 +0300 |
| commit | b4d8ae0e907b096583491101ddfc5143b7c08918 (patch) | |
| tree | c12e82703b41c9cd95e76fb8021cdc862a46e337 /drivers/iommu/s390-iommu.c | |
| parent | a4d996c2c4b55a42b21d0f7026b2bd6f7396f666 (diff) | |
| download | linux-b4d8ae0e907b096583491101ddfc5143b7c08918.tar.xz | |
iommu/s390: Fix incorrect pgsize_bitmap
The .pgsize_bitmap property of struct iommu_ops is not a page mask but
rather has a bit set for each size of pages the IOMMU supports. As the
comment correctly pointed out at this moment the code only support 4K
pages so simply use SZ_4K here.
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20221025115657.1666860-6-schnelle@linux.ibm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/s390-iommu.c')
| -rw-r--r-- | drivers/iommu/s390-iommu.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index 3e601ca6ee0f..104dfbec1037 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -12,13 +12,6 @@ #include <linux/sizes.h> #include <asm/pci_dma.h> -/* - * Physically contiguous memory regions can be mapped with 4 KiB alignment, - * we allow all page sizes that are an order of 4KiB (no special large page - * support so far). - */ -#define S390_IOMMU_PGSIZES (~0xFFFUL) - static const struct iommu_ops s390_iommu_ops; struct s390_domain { @@ -363,7 +356,7 @@ static const struct iommu_ops s390_iommu_ops = { .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group, - .pgsize_bitmap = S390_IOMMU_PGSIZES, + .pgsize_bitmap = SZ_4K, .get_resv_regions = s390_iommu_get_resv_regions, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = s390_iommu_attach_device, |