linux-kernel - Re: [PATCH v2 1/3] usb: core: add dma-noncoherent buffer alloc and free API

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Message-ID: <20250630133734.GA26768@lst.de>
Date: Mon, 30 Jun 2025 15:37:34 +0200
From: Christoph Hellwig <hch@....de>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Ricardo Ribalda <ribalda@...omium.org>, Christoph Hellwig <hch@....de>,
	Alan Stern <stern@...land.harvard.edu>, Xu Yang <xu.yang_2@....com>,
	ezequiel@...guardiasur.com.ar, mchehab@...nel.org,
	hdegoede@...hat.com, gregkh@...uxfoundation.org, mingo@...nel.org,
	tglx@...utronix.de, andriy.shevchenko@...ux.intel.com,
	viro@...iv.linux.org.uk, thomas.weissschuh@...utronix.de,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, imx@...ts.linux.dev, jun.li@....com
Subject: Re: [PATCH v2 1/3] usb: core: add dma-noncoherent buffer alloc and
 free API

On Mon, Jun 30, 2025 at 11:23:13AM +0300, Laurent Pinchart wrote:
> Christoph, you mentioned
> 
>   Right now we don't have a proper state machine for the
>   *_kernel_vmap_range, but we should probably add one once usage of this
>   grows.
> 
> Has there been any progress on that front ?

None that I'm aware off anyway.