[PATCH v6 17/25] iommu/qcom_iommu: Add an IOMMU_IDENTITIY_DOMAIN

[Baolu Lu]

On 2023/8/14 23:36, Jason Gunthorpe wrote:
> On Mon, Aug 14, 2023 at 02:32:33PM +0800, Baolu Lu wrote:
> 
>>> +	pm_runtime_get_sync(qcom_iommu->dev);
>>> +	for (i = 0; i < fwspec->num_ids; i++) {
>>> +		struct qcom_iommu_ctx *ctx = to_ctx(qcom_domain, fwspec->ids[i]);
>>> +
>>> +		/* Disable the context bank: */
>>> +		iommu_writel(ctx, ARM_SMMU_CB_SCTLR, 0);
>>> +
>>> +		ctx->domain = NULL;
>> Does setting ctx->domain to NULL still match this semantics?
> Yes, I did not try to fix this driver. NULL means identity in the
> ctx->domain.

Okay.

Best regards,
baolu