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From: Kees Cook <keescook@chromium.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Allen Pais <allen.lkml@gmail.com>,
	Oscar Carter <oscar.carter@gmx.com>,
	Romain Perier <romain.perier@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Peter Zijlstra <peterz@infradead.org>,
	Will Deacon <will@kernel.org>,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, linux-s390@vger.kernel.org,
	devel@driverdev.osuosl.org, linux-usb@vger.kernel.org,
	kgdb-bugreport@lists.sourceforge.net,
	alsa-devel@alsa-project.org, kernel-hardening@lists.openwall.com
Subject: Re: [PATCH 0/3] Modernize tasklet callback API
Date: Thu, 30 Jul 2020 11:14:50 -0700
Message-ID: <202007301113.45D24C9D@keescook> (raw)
In-Reply-To: <87h7tpa3hg.fsf@nanos.tec.linutronix.de>

[heavily trimmed CC list because I think lkml is ignoring this
thread...]

On Thu, Jul 30, 2020 at 09:03:55AM +0200, Thomas Gleixner wrote:
> Kees,
> 
> Kees Cook <keescook@chromium.org> writes:
> > This is the infrastructure changes to prepare the tasklet API for
> > conversion to passing the tasklet struct as the callback argument instead
> > of an arbitrary unsigned long. The first patch details why this is useful
> > (it's the same rationale as the timer_struct changes from a bit ago:
> > less abuse during memory corruption attacks, more in line with existing
> > ways of doing things in the kernel, save a little space in struct,
> > etc). Notably, the existing tasklet API use is much less messy, so there
> > is less to clean up.
> >
> > It's not clear to me which tree this should go through... Greg since it
> > starts with a USB clean-up, -tip for timer or interrupt, or if I should
> > just carry it. I'm open to suggestions, but if I don't hear otherwise,
> > I'll just carry it.
> >
> > My goal is to have this merged for v5.9-rc1 so that during the v5.10
> > development cycle the new API will be available. The entire tree of
> > changes is here[1] currently, but to split it up by maintainer the
> > infrastructure changes need to be landed first.
> >
> > Review and Acks appreciated! :)
> 
> I'd rather see tasklets vanish from the planet completely, but that's
> going to be a daring feat. So, grudgingly:

Understood! I will update the comments near the tasklet API.

> Acked-by: Thomas Gleixner <tglx@linutronix.de>

Thanks!

-- 
Kees Cook

       reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200716030847.1564131-1-keescook@chromium.org>
     [not found] ` <87h7tpa3hg.fsf@nanos.tec.linutronix.de>
2020-07-30 18:14   ` Kees Cook [this message]
2020-08-03  8:46     ` Allen

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