Re: [PATCH v6 17/25] iommu/qcom_iommu: Add an IOMMU_IDENTITIY_DOMAIN
From: Baolu Lu <baolu.lu@linux.intel.com>
Date: 2023-08-15 00:58:07
Also in:
linux-arm-kernel, linux-arm-msm, linux-iommu, linux-mediatek, linux-rockchip, linux-s390, linux-samsung-soc, linux-sunxi, linux-tegra
On 2023/8/14 23:36, Jason Gunthorpe wrote:
On Mon, Aug 14, 2023 at 02:32:33PM +0800, Baolu Lu wrote:quoted
quoted
+ 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