From: Ingo Molnar <mingo@elte.hu>
To: Mike Waychison <mikew@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@suse.de>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] x86: Allow disabling of sys_iopl, sys_ioperm
Date: Wed, 20 Jul 2011 21:42:40 +0200 [thread overview]
Message-ID: <20110720194239.GC7910@elte.hu> (raw)
In-Reply-To: <CAGTjWtCL-4kqHdQsKHTwCC58y9nqHsJXqxpyygRi3qFvUsqVWw@mail.gmail.com>
* Mike Waychison <mikew@google.com> wrote:
> On Thu, Jul 14, 2011 at 3:35 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> > On 07/14/2011 03:31 PM, Andrew Morton wrote:
> >>
> >> sys_iopl() is missing asmlinkage.
> >>
> >> It would be far more conventional to use cond_syscall(). Perhaps by
> >> adding a CONFIG_X86 area into kernel/sys_ni.c
> >>
> >> fyi, I'm offering special deals on checkpatch.pl site licenses this month.
> >
> > Again, I don't think this makes sense as a compile-time-only option.
>
> echo "enabled" > /proc/sys/kernel/iopl_available
> echo "disabled" > /proc/sys/kernel/iopl_available
> echo "locked" > /proc/sys/kernel/iopl_available
1, 0 and -1 ought to be a rather straightforward mapping to 'on',
'off' and 'off forever'.
Thanks,
Ingo
next prev parent reply other threads:[~2011-07-20 19:43 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-14 20:34 [PATCH 1/2] Kconfig: Allow disabling of CONFIG_DEVPORT Mike Waychison
2011-07-14 20:34 ` [PATCH 2/2] x86: Allow disabling of sys_iopl, sys_ioperm Mike Waychison
2011-07-14 20:37 ` H. Peter Anvin
2011-07-14 20:38 ` Mike Waychison
2011-07-14 20:40 ` H. Peter Anvin
2011-07-18 14:35 ` Jiri Kosina
2011-07-14 22:31 ` Andrew Morton
2011-07-14 22:35 ` H. Peter Anvin
2011-07-14 22:40 ` Mike Waychison
2011-07-14 22:45 ` H. Peter Anvin
2011-07-14 23:03 ` Alan Cox
2011-07-14 23:04 ` Alan Cox
2011-07-20 19:42 ` Ingo Molnar [this message]
2011-07-14 22:42 ` Alan Cox
2011-07-14 22:48 ` Mike Waychison
2011-07-14 23:00 ` Alan Cox
2011-07-14 23:20 ` Mike Waychison
2011-07-14 23:39 ` Alan Cox
2011-07-15 0:48 ` Mike Waychison
2011-07-15 9:55 ` Alan Cox
2011-07-15 18:13 ` Mike Waychison
2011-07-15 18:14 ` H. Peter Anvin
2011-07-15 22:30 ` Andrew G. Morgan
2011-07-15 22:42 ` Mike Waychison
2011-07-17 23:19 ` Eric Paris
2011-07-18 0:04 ` H. Peter Anvin
2011-07-14 21:21 ` [PATCH 1/2] Kconfig: Allow disabling of CONFIG_DEVPORT Greg KH
2011-07-14 22:17 ` Mike Waychison
2011-07-15 6:41 ` Greg KH
2011-07-15 13:13 ` Theodore Tso
2011-07-15 14:51 ` Greg KH
2011-07-15 14:58 ` Alan Cox
2011-07-15 15:19 ` Greg KH
2011-07-15 16:45 ` Mike Waychison
2011-07-15 17:01 ` Greg KH
2011-07-15 17:51 ` Mike Waychison
2011-07-15 18:10 ` H. Peter Anvin
2011-07-15 18:50 ` Andrew Morton
2011-07-15 18:55 ` Ted Ts'o
2011-07-16 7:56 ` Greg KH
2011-07-16 13:05 ` Ted Ts'o
2011-07-16 16:38 ` Christoph Hellwig
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