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Date: Thu, 20 Jul 2023 08:47:53 +0300
From: Stefan Jumarea <stefanjumarea02@...il.com>
To: Rich Felker <dalias@...ifal.cx>
Cc: musl@...ts.openwall.com, Razvan Deaconescu <razvand@...kraft.io>,
Michalis Pappas <michalis@...kraft.io>
Subject: Re: Project Proposal MTE Support
On Wed, Jul 19, 2023 at 09:51:22PM -0400, Rich Felker wrote:
> There is no immediate plan. Probably the first steps need to be
> figuring out some abstractions needed, particularly a way for the
> implementation to take tagged pointers from the caller and do the
> arithmetic to access partly out-of-band data (like the group header)
> with a different/zero tag. These should be able to collapse out to
> no-ops on archs without MTE, as well as be defined in a manner to work
> on other archs with comparable features (like the classic sparc prior
> art for this, if we ever get the sparc port added, or any future archs
> that add such a thing).
I see, that makes sense. I'll start working on it.
>
> I know there were past discussions on this and I may have some
> separate notes of my own from when mallocng was created, so I'll see
> what I can dig up that might be of use.
That would be great, thank you!
Stefan
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