[PATCH 0/2] arm64: mm: Fix cache maintenance for non-coherent streaming DMA

[Ard Biesheuvel]

On Fri, 10 Jun 2022 at 17:12, Will Deacon <will at kernel.org> wrote:
>
> Hi all,
>
> This pair of patches follows-up on the discussion we had on linux-arch
> earlier this week and addresses the reported problem for arm64 only.
>
> Other architectures should be able to do something similar if they wish,
> but this all came out of discussion and code inspection rather than a
> concrete failure.
>
> Cheers,
>
> Will
>
> Cc: Ard Biesheuvel <ardb at kernel.org>
> Cc: Christoph Hellwig <hch at lst.de>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Robin Murphy <robin.murphy at arm.com>
> Cc: Russell King <linux at armlinux.org.uk>
>
> --->8
>
> Will Deacon (2):
>   arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA
>     transfer
>   arm64: mm: Remove assembly DMA cache maintenance wrappers
>

Reviewed-by: Ard Biesheuvel <ardb at kernel.org>