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From: Thomas Gleixner <tglx@linutronix.de>
To: Andy Lutomirski <luto@kernel.org>,
	Gabriel Krisman Bertazi <krisman@collabora.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	kernel@collabora.com, Matthew Wilcox <willy@infradead.org>,
	Andrew Lutomirski <luto@kernel.org>,
	Paul Gofman <gofmanp@gmail.com>,
	Kees Cook <keescook@chromium.org>,
	"open list\:KERNEL SELFTEST FRAMEWORK" 
	<linux-kselftest@vger.kernel.org>, Shuah Khan <shuah@kernel.org>
Subject: Re: [PATCH v4 1/2] kernel: Implement selective syscall userspace redirection
Date: Mon, 20 Jul 2020 11:23:13 +0200	[thread overview]
Message-ID: <874kq2o7zy.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <CALCETrWdCN5KsRUkrb8VoYGRBhy71P-MAHGWhuJ5y4Z3vByyvg@mail.gmail.com>

Andy Lutomirski <luto@kernel.org> writes:
> On Thu, Jul 16, 2020 at 12:31 PM Gabriel Krisman Bertazi
> <krisman@collabora.com> wrote:
> The amount of syscall entry wiring that arches need to do is IMO
> already a bit out of hand.  Should we instead rename TIF_SECCOMP to
> TIF_SYSCALL_INTERCEPTION and have one generic callback that handles
> seccomp and this new thing?

The right way to go is to consolidate all the stupidly different
entry/exit work handling implementations and have exactly one in generic
code, i.e. what I posted a few days ago.

Then we can make new features only available in the generic version by
hiding the new functionality in the core code and not exposing the
functions to architecture implementations.

Making it easy for architectures to keep their own variant forever just
proliferates the mess we have right now.

Thanks,

        tglx

  parent reply	other threads:[~2020-07-20  9:23 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-16 19:31 [PATCH v4 0/2] Syscall User Redirection Gabriel Krisman Bertazi
2020-07-16 19:31 ` [PATCH v4 1/2] kernel: Implement selective syscall userspace redirection Gabriel Krisman Bertazi
2020-07-16 21:06   ` Matthew Wilcox
2020-07-16 21:26     ` Kees Cook
2020-07-17  0:20   ` Andy Lutomirski
2020-07-17  2:15     ` Gabriel Krisman Bertazi
2020-07-17  4:48       ` Andy Lutomirski
2020-07-21 12:06         ` Mark Rutland
2020-07-20  9:23     ` Thomas Gleixner [this message]
2020-07-20  9:44       ` Will Deacon
2020-07-20 10:08   ` Thomas Gleixner
2020-07-20 13:46     ` Gabriel Krisman Bertazi
2020-07-16 19:31 ` [PATCH v4 2/2] selftests: Add kselftest for syscall user dispatch Gabriel Krisman Bertazi
2020-07-16 20:04 ` [PATCH v4 0/2] Syscall User Redirection Kees Cook
2020-07-16 20:22   ` Christian Brauner
2020-07-16 20:25     ` Kees Cook
2020-07-16 20:29       ` Christian Brauner
2020-07-16 20:30         ` Gabriel Krisman Bertazi
2020-07-16 21:06           ` Carlos O'Donell
2020-08-02 12:01 ` Pavel Machek
2020-08-04 14:26   ` Gabriel Krisman Bertazi

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