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 <d...@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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