linux-kernel - Re: [RFC v2 0/2] dmapool: Mitigate device-controllable mem. corruption

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Message-ID: <Zz92l2gxYtK4SUC_@kbusch-mbp.dhcp.thefacebook.com>
Date: Thu, 21 Nov 2024 11:06:15 -0700
From: Keith Busch <kbusch@...nel.org>
To: Brian Johannesmeyer <bjohannesmeyer@...il.com>
Cc: Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
	Raphael Isemann <teemperor@...il.com>,
	Cristiano Giuffrida <giuffrida@...vu.nl>,
	Herbert Bos <h.j.bos@...nl>, Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [RFC v2 0/2] dmapool: Mitigate device-controllable mem.
 corruption

On Thu, Nov 21, 2024 at 10:31:11AM -0700, Brian Johannesmeyer wrote:
> **With the submitted patches applied AND using a maple tree to improve
> the performance of vaddr-to-block translations:**

If you have the time, could you compare with using xarray instead?