Re: devicetree random-seed properties, was: "Re: [PATCH v7 0/9] x86/mm: memory area address KASLR"

2016-06-30 Thread Jason Cooper
On Fri, Jun 24, 2016 at 01:40:41PM -0700, Andy Lutomirski wrote: > On Fri, Jun 24, 2016 at 12:04 PM, Kees Cook <keesc...@chromium.org> wrote: > > On Fri, Jun 24, 2016 at 9:02 AM, Jason Cooper <ja...@lakedaemon.net> wrote: > >> Thomas, > >> > >>

Re: devicetree random-seed properties, was: "Re: [PATCH v7 0/9] x86/mm: memory area address KASLR"

2016-06-30 Thread Jason Cooper
Hi Kees, On Fri, Jun 24, 2016 at 12:04:32PM -0700, Kees Cook wrote: > On Fri, Jun 24, 2016 at 9:02 AM, Jason Cooper <ja...@lakedaemon.net> wrote: > > Thomas, > > > > Sorry for wandering off the topic of your series. The big take away for > > me is that you

devicetree random-seed properties, was: "Re: [PATCH v7 0/9] x86/mm: memory area address KASLR"

2016-06-24 Thread Jason Cooper
for ARM/dt, I'll make sure we can extend it to legacy x86 systems. Ard, On Fri, Jun 24, 2016 at 12:54:01PM +0200, Ard Biesheuvel wrote: > On 24 June 2016 at 03:11, Jason Cooper <ja...@lakedaemon.net> wrote: > > On Thu, Jun 23, 2016 at 10:05:53PM +0200, Ard Biesheuvel wrote: ... >

Re: [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR

2016-06-23 Thread Jason Cooper
Hi Ard, On Thu, Jun 23, 2016 at 10:05:53PM +0200, Ard Biesheuvel wrote: > On 23 June 2016 at 21:58, Kees Cook <keesc...@chromium.org> wrote: > > On Thu, Jun 23, 2016 at 12:33 PM, Jason Cooper <ja...@lakedaemon.net> wrote: > >> On Wed, Jun 22, 2016 at 10:

Re: [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR

2016-06-23 Thread Jason Cooper
Hey Sandy, On Thu, Jun 23, 2016 at 03:45:54PM -0400, Sandy Harris wrote: > Jason Cooper <ja...@lakedaemon.net> wrote: > > > Modern systems that receive a seed from the bootloader via the > > random-seed property (typically from the hw-rng) can mix both sources >

Re: [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR

2016-06-23 Thread Jason Cooper
On Thu, Jun 23, 2016 at 12:59:07PM -0700, Kees Cook wrote: > On Thu, Jun 23, 2016 at 12:45 PM, Sandy Harris <sandyinch...@gmail.com> wrote: > > Jason Cooper <ja...@lakedaemon.net> wrote: > > > >> Modern systems that receive a seed from the bootloader via the

Re: [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR

2016-06-23 Thread Jason Cooper
Hey Kees, Thomas, On Wed, Jun 22, 2016 at 10:05:51AM -0700, Kees Cook wrote: > On Wed, Jun 22, 2016 at 8:59 AM, Thomas Garnier <thgar...@google.com> wrote: > > On Wed, Jun 22, 2016 at 5:47 AM, Jason Cooper <ja...@lakedaemon.net> wrote: > >> Hey Kees, > >>

Re: [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR

2016-06-22 Thread Jason Cooper
Hey Kees, On Tue, Jun 21, 2016 at 05:46:57PM -0700, Kees Cook wrote: > Notable problems that needed solving: ... > - Reasonable entropy is needed early at boot before get_random_bytes() >is available. This series is targetting x86, which typically has RDRAND/RDSEED instructions. Are you