Re: [RFC PATCH 1/3] content: Add VIRTIO_F_SWIOTLB to negotiate use of SWIOTLB bounce buffers

From: David Woodhouse
Date: Thu Apr 03 2025 - 03:24:56 EST


On Thu, 2025-04-03 at 15:13 +0800, Zhu Lingshan wrote:
>
> Hello David
>
> IMHO, if we need a bounce buffer, why not place it on the host memory?

As explained in the cover letter, this is designed for the case where
the device *cannot* easily access host memory.

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