Hi, On 23/08/2016 21:05, Robin Murphy wrote: > For non-aperture-based IOMMUs, the domain geometry seems to have become > the de-facto way of indicating the input address space size. That is > quite a useful thing from the users' perspective, so let's do the same. > > Signed-off-by: Robin Murphy <[email protected]> > --- > drivers/iommu/arm-smmu-v3.c | 2 ++ > drivers/iommu/arm-smmu.c | 2 ++ > 2 files changed, 4 insertions(+) > > diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c > index 72b996aa7460..9c56bd194dc2 100644 > --- a/drivers/iommu/arm-smmu-v3.c > +++ b/drivers/iommu/arm-smmu-v3.c > @@ -1574,6 +1574,8 @@ static int arm_smmu_domain_finalise(struct iommu_domain > *domain) > return -ENOMEM; > > domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; > + domain->geometry.aperture_end = (1UL << ias) - 1; > + domain->geometry.force_aperture = true; > smmu_domain->pgtbl_ops = pgtbl_ops; > > ret = finalise_stage_fn(smmu_domain, &pgtbl_cfg); > diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c > index 85bc74d8fca0..112918d787eb 100644 > --- a/drivers/iommu/arm-smmu.c > +++ b/drivers/iommu/arm-smmu.c > @@ -913,6 +913,8 @@ static int arm_smmu_init_domain_context(struct > iommu_domain *domain, > > /* Update the domain's page sizes to reflect the page table format */ > domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; > + domain->geometry.aperture_end = (1UL << ias) - 1; > + domain->geometry.force_aperture = true; > > /* Initialise the context bank with our page table cfg */ > arm_smmu_init_context_bank(smmu_domain, &pgtbl_cfg); > Reviewed-by: Eric Auger <[email protected]>
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