Re: [PATCH v9 12/12] iommu/arm-smmu-v3: Detect ARM_SMMU_OPT_KDUMP_ADOPT in probe()

From: Jason Gunthorpe

Date: Fri Aug 21 2026 - 19:16:44 EST


On Tue, 21 Jul 2026 14:38:39 -0700, Nicolin Chen <nicolinc@xxxxxxxxxx> wrote:
> arm_smmu_device_hw_probe() runs before arm_smmu_init_structures(), so it's
> natural to decide whether the kdump kernel must adopt the crashed kernel's
> stream table.
>
> Given that memremap is used to adopt the old stream table, set this option
> only on a coherent SMMU.
>
> [...]

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

--
Jason