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Message-ID: <CAEnbY+fS8FXVeouOxN3uohTvo7fBi5r7TQCGBZUmG3MGJhBrYg@mail.gmail.com>
Date: Mon, 4 Jan 2021 01:26:41 +1100
From: Daurnimator <quae@...rnimator.com>
To: Stefano Garzarella <sgarzare@...hat.com>
Cc: Jens Axboe <axboe@...nel.dk>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, 
	Christian Brauner <christian.brauner@...ntu.com>, io-uring <io-uring@...r.kernel.org>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Stefan Hajnoczi <stefanha@...hat.com>, 
	Jann Horn <jannh@...gle.com>, Jeff Moyer <jmoyer@...hat.com>, Aleksa Sarai <asarai@...e.de>, 
	Sargun Dhillon <sargun@...gun.me>, linux-kernel@...r.kernel.org, 
	Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode

On Fri, 28 Aug 2020 at 00:59, Stefano Garzarella <sgarzare@...hat.com> wrote:
> +               __u8 register_op; /* IORING_RESTRICTION_REGISTER_OP */

Can you confirm that this intentionally limited the future range of
IORING_REGISTER opcodes to 0-255?

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