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

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Date:   Thu, 6 Oct 2022 11:19:07 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     Sumit Garg <sumit.garg@...aro.org>
CC:     Phil Chang (張世勳) <Phil.Chang@...iatek.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>,
        Christoph Hellwig <hch@....de>,
        "Linus Torvalds" <torvalds@...ux-foundation.org>,
        "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 Thu, Oct 06, 2022 at 11:53:55AM +0530, Sumit Garg wrote:
> Hi Phil,
> 
> Please don't top-post in the OSS mailing list.
> 
> On Wed, 5 Oct 2022 at 08:59, Phil Chang (張世勳) <Phil.Chang@...iatek.com> wrote:
> >
> > Hi Sumit
> >
> > Thanks for mentioning that, in fact, our product is low memory devices, and continuous pages are extremely valuable.
> > Although our driver is not upstream yet but highly dependent on tee shm vmalloc support,
> 
> Sorry but you need to get your driver mainline in order to support
> vmalloc interface. As otherwise it's a maintenance nightmare to
> support interfaces in the mainline for out-of-tree drivers.

I agree.  It sounds like this driver is not going to be submitted any time
soon.  So I'll respin this series as is.  But I do have a couple of other
things to deal with first.  So if I'm wrong let me know soon.

Thanks,
Ira