Re: [PATCH io_uring-6.15] io_uring/zcrx: fix late dma unmap for a dead dev

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to bpf/bpf.git (master)
by Jens Axboe <axboe@kernel.dk>:

On Fri, 18 Apr 2025 13:02:27 +0100 you wrote:
> There is a problem with page pools not dma-unmapping immediately
> when the device is going down, and delaying it until the page pool is
> destroyed, which is not allowed (see links). That just got fixed for
> normal page pools, and we need to address memory providers as well.
> 
> Unmap pages in the memory provider uninstall callback, and protect it
> with a new lock. There is also a gap between a dma mapping is created
> and the mp is installed, so if the device is killed in between,
> io_uring would be hodling dma mapping to a dead device with no one to
> call ->uninstall. Move it to page pool init and rely on ->is_mapped to
> make sure it's only done once.
> 
> [...]

Here is the summary with links:
  - [io_uring-6.15] io_uring/zcrx: fix late dma unmap for a dead dev
    https://git.kernel.org/bpf/bpf/c/f12ecf5e1c5e

You are awesome, thank you!
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