Re: [PATCH] dma-direct: Set SG_DMA_SWIOTLB flag for dma-direct

From: Christoph Hellwig
Date: Tue May 07 2024 - 01:43:25 EST


On Mon, May 06, 2024 at 09:39:53AM -0700, T.J. Mercier wrote:
> > You should not check, you simply must handle it by doing the proper
> > DMA API based ownership management.
>
> That doesn't really work for uncached buffers.

What uncached buffers?