diff options
| author | Jeremy Gebben <[email protected]> | 2017-01-06 18:58:09 +0530 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2017-01-19 15:56:18 +0000 |
| commit | e7468a23daec1a7737a004c659fd041ddff8b918 (patch) | |
| tree | ce9bf9bb47fdd02cbf4e3cbafaf18d7d76cce946 | |
| parent | 579b2a65d245c093d3e63845c320b9321f112b75 (diff) | |
iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag
Allow the creation of privileged mode mappings, for stage 1 only.
Reviewed-by: Robin Murphy <[email protected]>
Tested-by: Robin Murphy <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Jeremy Gebben <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
| -rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index a40ce3406fef..feacc54bec68 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -350,11 +350,14 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data, if (data->iop.fmt == ARM_64_LPAE_S1 || data->iop.fmt == ARM_32_LPAE_S1) { - pte = ARM_LPAE_PTE_AP_UNPRIV | ARM_LPAE_PTE_nG; + pte = ARM_LPAE_PTE_nG; if (!(prot & IOMMU_WRITE) && (prot & IOMMU_READ)) pte |= ARM_LPAE_PTE_AP_RDONLY; + if (!(prot & IOMMU_PRIV)) + pte |= ARM_LPAE_PTE_AP_UNPRIV; + if (prot & IOMMU_MMIO) pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV << ARM_LPAE_PTE_ATTRINDX_SHIFT); |