Re: [PATCH v9 29/29] arm64: mte: Add Memory Tagging Extension documentation

Will Deacon
2020-09-17T08:12:41Z

On Fri, Sep 04, 2020 at 11:30:29AM +0100, Catalin Marinas wrote:
> From: Vincenzo Frascino <vincenzo.frascino@arm.com>
>
> Memory Tagging Extension (part of the ARMv8.5 Extensions) provides
> a mechanism to detect the sources of memory related errors which
> may be vulnerable to exploitation, including bounds violations,
> use-after-free, use-after-return, use-out-of-scope and use before
> initialization errors.
>
> Add Memory Tagging Extension documentation for the arm64 linux
> kernel support.
>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Co-developed-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> Acked-by: Szabolcs Nagy <szabolcs.nagy@arm.com>

I'm taking this to mean that Szabolcs is happy with the proposed ABI --
please shout if that's not the case!

Wasn't there a man page kicking around too? Would be good to see that
go upstream (to the manpages project, of course).

Will