Re: RFC: WMI Enhancements

From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Mario Limonciello <Mario.Limonciello@dell.com>
Cc: "Pali Rohár" <pali.rohar@gmail.com>,
	"dvhart@infradead.org" <dvhart@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	"Andy Lutomirski" <luto@amacapital.net>,
	"Brown, Len" <len.brown@intel.com>,
	"Corentin Chary" <corentin.chary@gmail.com>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Platform Driver" <platform-driver-x86@vger.kernel.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>
Subject: Re: RFC: WMI Enhancements
Date: Tue, 9 May 2017 22:04:15 +0300	[thread overview]
Message-ID: <CAHp75VfxVeBvo5bXjusi-ANNDEdCG0KAWrr2udu_GueQkhcd+Q@mail.gmail.com> (raw)
In-Reply-To: <46fe1658d33647559b46c3a390a581ed@ausx13mpc120.AMER.DELL.COM>

On Tue, May 9, 2017 at 9:10 PM,  <Mario.Limonciello@dell.com> wrote:

>> > > Then took relevant decompression code and it really decompressed that
>> > > binary MOF WMI buffer. But still decompressed format is binary, but I
>> > > now see all WMI GUID encoded in UTF-16. Decompressed BMF file has again
>> > > "FOMB" magic header.
>> >
>> > Well that's great.  Is it possible that this compression is used for every time
>> > a class was declared?
>>
>> Looks like not. That decompressed output seems to be not compressed
>> anymore. Just use same magic header.
> Actually it looks like a new magic header to me after decompressed.
>
> 46 4f 4d 42 54 15 00 00  01 00 00 00 01 00 00 00
> That's now FOMBT

I think you just mistakenly take 0x54 as letter when it looks more like

0x00001554
0x00000001
0x00000001

from the above dump.

-- 
With Best Regards,
Andy Shevchenko