linux-kernel - Re: [PATCH 2/4] tee: Remove vmalloc page support

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Date:   Mon, 10 Oct 2022 10:20:15 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Sumit Garg <sumit.garg@...aro.org>,
        Phil Chang (張世勳) 
        <Phil.Chang@...iatek.com>,
        "ira.weiny@...el.com" <ira.weiny@...el.com>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        "Fabio M. De Francesco" <fmdefrancesco@...il.com>,
        "op-tee@...ts.trustedfirmware.org" <op-tee@...ts.trustedfirmware.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH 2/4] tee: Remove vmalloc page support

On Mon, Oct 10, 2022 at 12:42 AM Christoph Hellwig <hch@....de> wrote:
>
> I suspect the best long term option would be to just pass an iov_iter..

Hmm. Yeah, that sounds like a workable model, and solves the problem
JensW pointed out with my simplistic "just pass a page array" approach
where you also need to keep track of how to release things.

                   Linus