Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 03/16] iommu: Only allow iommu_map/unmap for paging domains | Date | Thu, 26 Mar 2015 13:43:06 +0100 |
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From: Joerg Roedel <jroedel@suse.de>
Check for the new __IOMMU_DOMAIN_PAGING flag before calling into the iommu drivers ->map and ->unmap call-backs.
Signed-off-by: Joerg Roedel <jroedel@suse.de> --- drivers/iommu/iommu.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 4920605..656b949 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1063,6 +1063,9 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova, domain->ops->pgsize_bitmap == 0UL)) return -ENODEV; + if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING))) + return -EINVAL; + /* find out the minimum page size supported */ min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap); @@ -1114,6 +1117,9 @@ size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size) domain->ops->pgsize_bitmap == 0UL)) return -ENODEV; + if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING))) + return -EINVAL; + /* find out the minimum page size supported */ min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap); -- 1.9.1
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