linux-kernel - Re: [PATCH v2 3/3] arm64: entry: Convert to generic entry

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Date: Thu, 27 Jun 2024 10:01:11 -0700
From: Kees Cook <kees@...nel.org>
To: Jinjie Ruan <ruanjinjie@...wei.com>
Cc: catalin.marinas@....com, will@...nel.org, oleg@...hat.com,
	tglx@...utronix.de, peterz@...radead.org, luto@...nel.org,
	wad@...omium.org, rostedt@...dmis.org, arnd@...db.de,
	ardb@...nel.org, broonie@...nel.org, mark.rutland@....com,
	rick.p.edgecombe@...el.com, leobras@...hat.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 3/3] arm64: entry: Convert to generic entry

On Thu, Jun 27, 2024 at 04:12:09PM +0800, Jinjie Ruan wrote:
> Tested ok with following test cases on Qemu cortex-a53 and HiSilicon
> Kunpeng-920:
>  - Run `perf top` command
>  - Switch between different `dynamic preempt` mode
>  - Use `pseudo nmi`
>  - stress-ng CPU stress test.

I think two other things to test would be the MTE functionality
(especially async mode), and kasan in general.

I've really struggled to get MTE working with qemu, so likely real
hardware would be needed for that... I'm hoping the ARM folks have
access to something that would work well for this. :)

-Kees

-- 
Kees Cook