From: "Pali Rohár" <pali.rohar@gmail.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Darren Hart <dvhart@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org
Subject: Re: [PATCH 3/3] platform/wmi: Expose the raw WDG data in sysfs
Date: Tue, 1 Aug 2017 23:36:18 +0200 [thread overview]
Message-ID: <20170801213618.GL25574@pali> (raw)
In-Reply-To: <2014962.u6moyPZATx@aspire.rjw.lan>
On Tuesday 01 August 2017 23:20:10 Rafael J. Wysocki wrote:
> No evaluation of AML methods from user space, please.
>
> This is plain dangerous, because you never know what those things do and doing
> that on production systems is just a plain "no".
>
> You can, however, expose the output of AML methods this way or another,
> for example if they are expected to generate packages of data or similar.
>
> The interface for that cannot be "evaluate this random method right now and
> give me the result", though.
It is not a random AML method. It is _WDG buffer which wmi.ko already
reads + parse (IIRC only once when doing initialization) and purpose is
to provide copy of this buffer also to userspace. Similarly like
wmi-bmof.ko provides MOF buffer.
--
Pali Rohár
pali.rohar@gmail.com
next prev parent reply other threads:[~2017-08-01 21:36 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-01 15:37 [PATCH 0/3] Three WMI improvements Andy Lutomirski
2017-08-01 15:37 ` [PATCH 1/3] platform/dell-wmi: Fix driver interface version query Andy Lutomirski
2017-08-01 15:43 ` Pali Rohár
2017-08-01 18:08 ` Andy Lutomirski
2017-08-01 19:54 ` Darren Hart
2017-08-01 20:45 ` Pali Rohár
2017-08-01 20:59 ` Darren Hart
2017-08-01 21:16 ` Pali Rohár
2017-08-02 2:25 ` Andy Lutomirski
2017-08-02 2:54 ` Darren Hart
2017-08-01 19:52 ` Darren Hart
2017-08-01 20:06 ` Darren Hart
2017-08-01 20:36 ` Pali Rohár
2017-08-01 15:37 ` [PATCH 2/3] platform/dell-wmi: Update dell_wmi_check_descriptor_buffer() to new model Andy Lutomirski
2017-08-01 15:44 ` Pali Rohár
2017-08-19 0:14 ` Darren Hart
2017-08-01 15:37 ` [PATCH 3/3] platform/wmi: Expose the raw WDG data in sysfs Andy Lutomirski
2017-08-01 15:46 ` Pali Rohár
2017-08-01 18:29 ` Andy Lutomirski
2017-08-01 20:03 ` Darren Hart
2017-08-01 20:19 ` Andy Lutomirski
2017-08-01 20:40 ` Pali Rohár
2017-08-01 21:17 ` Darren Hart
2017-08-01 21:20 ` Rafael J. Wysocki
2017-08-01 21:36 ` Pali Rohár [this message]
2017-08-01 21:32 ` Rafael J. Wysocki
2017-08-01 22:06 ` Darren Hart
2017-08-01 21:31 ` Pali Rohár
2017-08-01 22:39 ` Darren Hart
2017-08-01 23:51 ` Andy Lutomirski
2017-08-02 2:22 ` Darren Hart
2017-08-02 7:49 ` Pali Rohár
2017-08-04 15:03 ` Andy Lutomirski
2017-08-06 21:36 ` Pali Rohár
2017-08-06 22:09 ` Andy Lutomirski
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