Oh, one more thing...
On 16/12/2019 4:37 pm, Jordan Crouse wrote:
[...]
@@ -651,6 +659,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain
*domain,
enum io_pgtable_fmt fmt;
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct arm_smmu_cfg *cfg = &smmu_domain->cfg;
+ u32 quirks = 0;
mutex_lock(&smmu_domain->init_mutex);
if (smmu_domain->smmu)
@@ -719,6 +728,8 @@ static int arm_smmu_init_domain_context(struct iommu_domain
*domain,
oas = smmu->ipa_size;
if (cfg->fmt == ARM_SMMU_CTX_FMT_AARCH64) {
fmt = ARM_64_LPAE_S1;
+ if (smmu_domain->split_pagetables)
+ quirks |= IO_PGTABLE_QUIRK_ARM_TTBR1;
To avoid me forgetting and questioning it again in future, I'd recommend
sticking a comment somewhere near here that we don't reduce cfg->ias in
this case because we're currently assuming SEP_UPSTREAM.
Robin.
} else if (cfg->fmt == ARM_SMMU_CTX_FMT_AARCH32_L) {
fmt = ARM_32_LPAE_S1;
ias = min(ias, 32UL);
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