linux-hardening - Re: [PATCH v4 1/7] typeinfo: Introduce KCFI typeinfo mangling API

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Message-ID: <202510141631.812788BFB@keescook>
Date: Tue, 14 Oct 2025 16:32:13 -0700
From: Kees Cook <kees@...nel.org>
To: Qing Zhao <qing.zhao@...cle.com>
Cc: Andrew Pinski <pinskia@...il.com>, Jakub Jelinek <jakub@...hat.com>,
	Martin Uecker <uecker@...raz.at>,
	Richard Biener <rguenther@...e.de>,
	Joseph Myers <josmyers@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ard Biesheuvel <ardb@...nel.org>, Jeff Law <jeffreyalaw@...il.com>,
	Jan Hubicka <hubicka@....cz>,
	Richard Earnshaw <richard.earnshaw@....com>,
	Richard Sandiford <richard.sandiford@....com>,
	Marcus Shawcroft <marcus.shawcroft@....com>,
	Kyrylo Tkachov <kyrylo.tkachov@....com>,
	Kito Cheng <kito.cheng@...il.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Andrew Waterman <andrew@...ive.com>,
	Jim Wilson <jim.wilson.gcc@...il.com>,
	Dan Li <ashimida.1990@...il.com>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Ramon de C Valle <rcvalle@...gle.com>,
	Joao Moreira <joao@...rdrivepizza.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Bill Wendling <morbo@...gle.com>,
	"gcc-patches@....gnu.org" <gcc-patches@....gnu.org>,
	"linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>
Subject: Re: [PATCH v4 1/7] typeinfo: Introduce KCFI typeinfo mangling API

On Fri, Oct 03, 2025 at 07:21:22PM +0000, Qing Zhao wrote:
> > On Sep 25, 2025, at 23:02, Kees Cook <kees@...nel.org> wrote:
> > [...]
> > +/* Helper to update FNV-1a hash with a single character.  */
> 
> All the comments of the functions in this file need explanation of the parameters. 

Whoops! Yes, I will fix that. Thanks!

-Kees

-- 
Kees Cook