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Message-ID: <20160630214856.GI9922@io.lakedaemon.net> Date: Thu, 30 Jun 2016 21:48:56 +0000 From: Jason Cooper <jason@...edaemon.net> To: Andy Lutomirski <luto@...capital.net> Cc: Kees Cook <keescook@...omium.org>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, Thomas Garnier <thgarnie@...gle.com>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>, "x86@...nel.org" <x86@...nel.org>, Borislav Petkov <bp@...e.de>, Baoquan He <bhe@...hat.com>, Yinghai Lu <yinghai@...nel.org>, Juergen Gross <jgross@...e.com>, Matt Fleming <matt@...eblueprint.co.uk>, Toshi Kani <toshi.kani@....com>, Andrew Morton <akpm@...ux-foundation.org>, Dan Williams <dan.j.williams@...el.com>, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Xiao Guangrong <guangrong.xiao@...ux.intel.com>, Martin Schwidefsky <schwidefsky@...ibm.com>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>, Alexander Kuleshov <kuleshovmail@...il.com>, Alexander Popov <alpopov@...ecurity.com>, Dave Young <dyoung@...hat.com>, Joerg Roedel <jroedel@...e.de>, Lv Zheng <lv.zheng@...el.com>, Mark Salter <msalter@...hat.com>, Dmitry Vyukov <dvyukov@...gle.com>, Stephen Smalley <sds@...ho.nsa.gov>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Christian Borntraeger <borntraeger@...ibm.com>, Jan Beulich <JBeulich@...e.com>, LKML <linux-kernel@...r.kernel.org>, Jonathan Corbet <corbet@....net>, "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org> Subject: Re: devicetree random-seed properties, was: "Re: [PATCH v7 0/9] x86/mm: memory area address KASLR" On Fri, Jun 24, 2016 at 01:40:41PM -0700, Andy Lutomirski wrote: > On Fri, Jun 24, 2016 at 12:04 PM, Kees Cook <keescook@...omium.org> wrote: > > On Fri, Jun 24, 2016 at 9:02 AM, Jason Cooper <jason@...edaemon.net> wrote: > >> Thomas, > >> > >> Sorry for wandering off the topic of your series. The big take away for > >> me is that you and Kees are concerned about x86 systems pre-RDRAND. > >> Just as I'm concerned about deployed embedded systems without bootloader > >> support for hw-rngs and so forth. > >> > >> Whatever final form the approach takes for ARM/dt, I'll make sure we can > >> extend it to legacy x86 systems. > > > > Yeah, this seems like a productive conversation to me. :) > > I have an old patch and spec I need to dust off that does this during > *very* early boot on x86 using MSRs so that kASLR can use it. I'd love to see that. ;-) thx, Jason.
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