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From:   Thomas Gleixner <tglx@linutronix.de>
To:     Marcelo Tosatti <mtosatti@redhat.com>, linux-kernel@vger.kernel.org
Cc:     Nitesh Lal <nilal@redhat.com>,
        Nicolas Saenz Julienne <nsaenzju@redhat.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Christoph Lameter <cl@linux.com>,
        Juri Lelli <juri.lelli@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Alex Belits <abelits@belits.com>, Peter Xu <peterx@redhat.com>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Oscar Shiang <oscar0225@livemail.tw>,
        Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [patch v12 13/13] task isolation: only TIF_TASK_ISOL if task
 isolation is enabled
In-Reply-To: <20220315153314.333646565@fedora.localdomain>
References: <20220315153132.717153751@fedora.localdomain>
 <20220315153314.333646565@fedora.localdomain>
Date:   Wed, 27 Apr 2022 09:45:54 +0200
Message-ID: <87zgk7x93h.ffs@tglx>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

On Tue, Mar 15 2022 at 12:31, Marcelo Tosatti wrote:

$Subject does not qualify as a parseable sentence.

> This avoids processing of TIF_TASK_ISOL, when returning to userspace,
> for tasks which do not have task isolation configured.

That's how kernel development works, right:

   1) Add half baken stuff
   2) Apply duct tape on top

You know exactly, that this is _not_ the way it works.

This whole thing is half thought out tinkerware with [ill|un]defined
semantics.

Thanks,

        tglx