Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Wed, 29 Feb 2012 11:51:49 -0600
From: Will Drewry <wad@...omium.org>
To: Roland McGrath <mcgrathr@...gle.com>
Cc: Oleg Nesterov <oleg@...hat.com>, linux-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, linux-doc@...r.kernel.org, 
	kernel-hardening@...ts.openwall.com, netdev@...r.kernel.org, x86@...nel.org, 
	arnd@...db.de, davem@...emloft.net, hpa@...or.com, mingo@...hat.com, 
	peterz@...radead.org, rdunlap@...otime.net, tglx@...utronix.de, luto@....edu, 
	eparis@...hat.com, serge.hallyn@...onical.com, djm@...drot.org, 
	scarybeasts@...il.com, indan@....nu, pmoore@...hat.com, 
	akpm@...ux-foundation.org, corbet@....net, eric.dumazet@...il.com, 
	markus@...omium.org, coreyb@...ux.vnet.ibm.com, keescook@...omium.org, 
	Denys Vlasenko <dvlasenk@...hat.com>
Subject: Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support

On Wed, Feb 29, 2012 at 11:41 AM, Roland McGrath <mcgrathr@...gle.com> wrote:
> I don't think TIF_NOTIFY_RESUME is apropos here.  That only triggers on
> returning to user mode, i.e. after syscall exit.  But regardless of the
> exact implementation details, I don't think it will be prohibitive to add
> some means by which the fast-path can back off before actual syscall entry
> and go to the slow path for ptrace reporting.
>
> Since there is no strong reason to think it can't be reorganized that way
> later, I don't see any good rationale for constraining the seccomp-filter
> feature definition based on a plan to optimize the implementation in the
> future.

Sounds good to me.   I'll move to ptrace_event and save the problem of
code organization for the future.

Thanks!

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.