Re: [PATCH] vduse: Use fixed 4KB bounce pages for arm64 64KB page size

[Jason Wang]

On Mon, Sep 15, 2025 at 3:34 PM <sheng.z...@bytedance.com> wrote:
>
> From: Sheng Zhao <sheng.z...@bytedance.com>
>
> The allocation granularity of bounce pages is PAGE_SIZE. This may cause
> even small IO requests to occupy an entire bounce page exclusively.

This sounds more like an issue of the IOVA allocating that use the
wrong granular?

> The
> kind of memory waste will be more significant on arm64 with 64KB pages.
>
> So, optimize it by using fixed 4KB bounce pages.
>
> Signed-off-by: Sheng Zhao <sheng.z...@bytedance.com>

Thanks