From: Patrick Steinhardt <ps@pks.im>
To: The development of GNU GRUB <grub-devel@gnu.org>
Cc: Stefan Berger <stefanb@linux.ibm.com>,
Daniel Kiper <dkiper@net-space.pl>,
Stefan Berger <stefanb@linux.vnet.ibm.com>,
Daniel Axtens <dja@axtens.net>
Subject: Re: [PATCH v3 2/4] ieee1275: claim more memory
Date: Sun, 8 Aug 2021 14:53:31 +0200 [thread overview]
Message-ID: <YQ/Tvyt2DUSauHPM@ncase> (raw)
In-Reply-To: <YQ6wnY+gjUr2bIyF@ncase>
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On Sat, Aug 07, 2021 at 06:11:09PM +0200, Patrick Steinhardt wrote:
> On Wed, Aug 04, 2021 at 08:40:01AM -0400, Stefan Berger wrote:
> >
> > On 8/4/21 7:19 AM, Daniel Kiper wrote:
> > > CC-ing Patrick.
> > >
> > > On Fri, Jul 30, 2021 at 11:45:38AM -0400, Stefan Berger wrote:
> > >> From: Daniel Axtens <dja@axtens.net>
> > >>
> > >> On powerpc-ieee1275, we are running out of memory trying to verify
> > >> anything. This is because:
> > >>
> > >> - we have to load an entire file into memory to verify it. This is
> > >> extremely difficult to change with appended signatures.
> > >> - We only have 32MB of heap.
> > >> - Distro kernels are now often around 30MB.
> > >>
> > >> So we want to claim more memory from OpenFirmware for our heap.
> > > Stefan, Patrick, Daniel, may I ask one of you to work on the [1]
> > > proposal. I want to have this solution implemented.
> >
> > Is the design in [1] correct just that the patches need forward-porting?
> >
> > Stefan
>
> Honestly, I don't quite recall the state back when I was working on it.
> Forward-porting the patch set is trivial to do, there aren't really any
> conflicts. I may try to invest some time into it tomorrow to see whether
> it did work as advertised.
>
> Patrick
So I've checked with my LUKS2/Argon2 patch set, and it does work as
expected with a memory hardness parameter of 1GB. I'll send out a
revised patch series of those patches for review.
Patrick
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next prev parent reply other threads:[~2021-08-08 12:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-30 15:45 [PATCH v3 0/4] Add support for trusted boot on IBM PPC platform Stefan Berger
2021-07-30 15:45 ` [PATCH v3 1/4] ieee1275: Move #defines into common ieee1275.h header Stefan Berger
2021-08-04 10:42 ` Daniel Kiper
2021-08-05 22:22 ` Stefan Berger
2021-08-09 12:17 ` Daniel Kiper
2021-07-30 15:45 ` [PATCH v3 2/4] ieee1275: claim more memory Stefan Berger
2021-08-04 11:19 ` Daniel Kiper
2021-08-04 12:40 ` Stefan Berger
2021-08-05 13:15 ` Daniel Kiper
2021-08-07 16:11 ` Patrick Steinhardt
2021-08-08 12:53 ` Patrick Steinhardt [this message]
2021-07-30 15:45 ` [PATCH v3 3/4] ieee1275: request memory with ibm, client-architecture-support Stefan Berger
2021-07-30 15:45 ` [PATCH v3 4/4] ibmvtpm: Add support for trusted boot using a vTPM 2.0 Stefan Berger
2021-08-04 11:09 ` Daniel Kiper
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