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From: Greg KH <gregkh@linuxfoundation.org>
To: Richard Hughes <hughsient@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	Hans-Gert Dahmen <hans-gert.dahmen@immu.ne>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Mauro Lima <mauro.lima@eclypsium.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Philipp Deppenwiese <philipp.deppenwiese@immu.ne>,
	"platform-driver-x86@vger.kernel.org" 
	<platform-driver-x86@vger.kernel.org>
Subject: Re: [PATCH] firmware: export x86_64 platform flash bios region via sysfs
Date: Fri, 12 Nov 2021 07:52:13 +0100	[thread overview]
Message-ID: <YY4PHacrS4czhEx3@kroah.com> (raw)
In-Reply-To: <CAD2FfiH9OcKyUo6xjTfSENrEKF=4kZiGU4rT0FriK6KgKYSzyw@mail.gmail.com>

On Thu, Nov 11, 2021 at 09:07:42PM +0000, Richard Hughes wrote:
> On Thu, 11 Nov 2021 at 15:50, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > I was thinking about SHA256 hashes or so (as they tell about
> > binaries). In any case the interface for this seems to be in the
> > kernel.
> 
> I'm quite sure you don't want to put those EFI format decoders in the
> kernel; there is all kinds of weird compression schemes, volumes are
> recursive, and vendors like to hide weird things in the undocumented
> (or reserved) areas.

Why don't we just export these areas to userspace and let the decoding
of them happen there?  That's a real "thing" that the kernel can easily
detect is present and know to export properly as they are defined by the
UEFI specification, right?

Yes, that will not help for the non-UEFI x86 systems, but it's a
start...

thanks,

greg k-h

  reply	other threads:[~2021-11-12  6:52 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-09  0:01 [PATCH] firmware: export x86_64 platform flash bios region via sysfs Hans-Gert Dahmen
2021-11-09  6:16 ` Greg KH
2021-11-09  8:52   ` Hans-Gert Dahmen
2021-11-09  8:56     ` Hans-Gert Dahmen
2021-11-09 10:28     ` Greg KH
2021-11-09 12:32       ` Hans-Gert Dahmen
2021-11-09 12:42         ` Greg KH
2021-11-09 14:09           ` Mauro Lima
2021-11-09 14:11             ` Mauro Lima
2021-11-09 14:10           ` Hans-Gert Dahmen
     [not found]             ` <CAHp75VfbYsyC=7Ncnex1f_jiwrZhExDF7iy4oSGZgS1cHmsN0Q@mail.gmail.com>
2021-11-10  8:37               ` Hans-Gert Dahmen
2021-11-10  9:04                 ` Andy Shevchenko
2021-11-10  9:17                   ` Hans-Gert Dahmen
2021-11-10  9:25                     ` Andy Shevchenko
2021-11-10 10:00                       ` Hans-Gert Dahmen
2021-11-10 13:13                         ` Mauro Lima
2021-11-10 16:31                           ` Andy Shevchenko
2021-11-10 17:37                             ` Mauro Lima
2021-11-11  6:42                               ` Mika Westerberg
2021-11-11  8:59                                 ` Hans-Gert Dahmen
2021-11-11 10:32                                   ` Mika Westerberg
2021-11-11 10:55                                     ` Hans-Gert Dahmen
2021-11-11 11:43                                       ` Greg KH
2021-11-11 11:46                                     ` Richard Hughes
2021-11-11 12:46                                       ` Andy Shevchenko
2021-11-11 12:56                                         ` Hans-Gert Dahmen
2021-11-11 13:54                                           ` Andy Shevchenko
2021-11-11 14:33                                             ` Hans-Gert Dahmen
2021-11-11 15:30                                               ` Andy Shevchenko
2021-11-11 15:43                                                 ` Ard Biesheuvel
2021-11-11 15:49                                                   ` Andy Shevchenko
2021-11-11 16:05                                                     ` Hans-Gert Dahmen
2021-11-11 21:07                                                     ` Richard Hughes
2021-11-12  6:52                                                       ` Greg KH [this message]
2021-11-12 10:09                                                         ` Richard Hughes
2021-11-12 10:43                                                           ` Greg KH
2021-11-12 12:25                                                             ` Hans-Gert Dahmen
2021-11-11 16:07                                                 ` Hans-Gert Dahmen
2021-11-11 16:44                                                   ` Andy Shevchenko
2021-11-11 16:55                                                     ` Hans-Gert Dahmen
2021-11-11 17:48                                                       ` Andy Shevchenko
2021-11-11 18:14                                                         ` Hans-Gert Dahmen
2021-11-11 19:14                                                           ` Ard Biesheuvel
2021-11-11 20:50                                                             ` Hans-Gert Dahmen
2021-11-11 13:00                                       ` Mika Westerberg
2021-11-11 13:22                                         ` Richard Hughes
2021-11-11 13:34                                           ` Mika Westerberg
2021-11-11 13:36                                             ` Hans-Gert Dahmen
2021-11-11 14:42                                             ` Mauro Lima
2021-11-11 15:06                                               ` Mika Westerberg
2021-11-11 15:16                                                 ` Hans-Gert Dahmen
2021-11-12  6:59                                                   ` Mika Westerberg
2021-11-11 15:31                                                 ` Mauro Lima
2021-11-11 11:50                                 ` Mauro Lima
2021-11-10 17:41                             ` Hans-Gert Dahmen
     [not found]   ` <E1CBFD23-AC3B-43BF-BF0A-158844486BA9@getmailspring.com>
2021-11-09 10:24     ` Greg KH
2021-11-09 10:30       ` Philipp Deppenwiese
2021-11-09 11:25         ` Greg KH
2021-11-09 13:55   ` Mauro Lima
2021-11-09 16:12     ` Greg KH
2021-11-09 17:23       ` Mauro Lima
  -- strict thread matches above, loose matches on Subject: below --
2021-06-22 14:23 Hans-Gert Dahmen
2021-06-22 20:02 ` Greg KH
2021-06-25 13:54   ` Hans-Gert Dahmen
2021-06-22 22:18 ` David Laight
2021-06-23 12:17   ` Hans-Gert Dahmen
2021-06-23 12:40     ` gregkh
2021-06-24 11:20       ` Hans-Gert Dahmen
2021-06-24 11:42         ` gregkh
2021-06-23 13:22     ` David Laight
2021-06-18 16:47 Hans-Gert Dahmen

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