On 3/30/22 07:01, Deucher, Alexander wrote:
>> Just scanning this, it looks *awfully* generic. Is anything in
>> here AMD- specific? Should this be in an AMD-specific file?
> There is some information about the ACPI tables used to enumerate the
> IOMMUs and a link to the AMD IOMMU programming doc
t; b...@alien8.de; mi...@redhat.com; t...@linutronix.de; j...@8bytes.org;
> Suthikulpanit, Suravee ; w...@kernel.org;
> iommu@lists.linux-foundation.org; robin.mur...@arm.com; Hegde, Vasant
>
> Subject: Re: [PATCH V3 1/2] Documentation: x86: Add documentation for
> AMD IOMMU
>
> On 3
On 3/28/22 10:28, Alex Deucher wrote:
> +How is IOVA generated?
> +--
> +
> +Well behaved drivers call dma_map_*() calls before sending command to device
> +that needs to perform DMA. Once DMA is completed and mapping is no longer
> +required, driver performs dma_unmap_*() calls
