linux-kernel - Re: [PATCH v3 1/5] arm64/perf: Rename Cortex A57 events

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160215200613.GY6298@arm.com>
Date:	Mon, 15 Feb 2016 20:06:13 +0000
From:	Will Deacon <will.deacon@....com>
To:	Jan Glauber <jglauber@...ium.com>
Cc:	Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 1/5] arm64/perf: Rename Cortex A57 events

On Mon, Feb 15, 2016 at 07:40:37PM +0000, Will Deacon wrote:
> On Wed, Feb 03, 2016 at 06:11:56PM +0100, Jan Glauber wrote:
> > The implemented Cortex A57 events are not A57 specific.
> > They are recommended by ARM and can be found on other
> > ARMv8 SOCs like Cavium ThunderX too. Therefore move
> > these events to the common PMUv3 table.
> 
> I can't find anything in the architecture that suggests these event
> numbers are necessarily portable between implementations. Am I missing
> something?

Aha, I just noticed appendix K3.1 (silly me for missing it...).

Lemme check whether or not that mandates that those encodings can't be
used for wildly different things.

Will