Re: [PATCH v3 01/13] gpu: nova-core: Set correct DMA mask

[Danilo Krummrich]

On 9/30/25 3:16 PM, Alistair Popple wrote:
> +        // SAFETY: No DMA allocations have been made yet
> +        unsafe { pdev.dma_set_mask_and_coherent(DmaMask::new::<47>())? };

I think you forgot to derive the value from the relevant sources, i.e. physical
bus, DMA controller and MMU capabilities.

I assume not all GPU architectures / generations have the exact same capabilities?