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Date: Thu, 04 Aug 2022 13:41:58 +0300 From: Evgeniy Baskov <baskov@...ras.ru> To: Dave Hansen <dave.hansen@...el.com> Cc: Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, x86@...nel.org, linux-kernel@...r.kernel.org, Alexey Khoroshilov <khoroshilov@...ras.ru>, linux-hardening@...r.kernel.org Subject: Re: [RFC PATCH 0/8] x86_64: Harden compressed kernel, part 1 On 2022-08-03 17:05, Dave Hansen wrote: > > That shows me that it's _possible_ to build a more strict PE loader > that > wouldn't load Linux. But, in practice is anyone using a more strict PE > loader? Does anyone actually want that in practice? Or, again, is > this > more strict PE loader just an academic demonstration? > > The README starts: > > This branch demonstrates... > > That doesn't seem like something that's _important_ to deal with. > Sounds like a proof-of-concept. > > Don't get me wrong, I'm all for improving thing, even if the benefits > are far off. But, let's not fool ourselves. We have commercial closed-source UEFI firmware implementation at ISP RAS that follows the behavior of the secure_pe branch. That firmware is used as a part of [1]. [1] https://www.ispras.ru/en/technologies/asperitas/ Thanks, Evgeniy Baskov
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