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Re: [PATCH v2 02/22] ieee1275: claim more memory

From: Stefan Berger
Subject: Re: [PATCH v2 02/22] ieee1275: claim more memory
Date: Thu, 22 Jul 2021 13:11:15 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0

On 7/21/21 10:45 AM, Daniel Kiper wrote:
On Fri, Jul 16, 2021 at 05:59:20AM +0200, Patrick Steinhardt wrote:

I think that my [1] should solve the issue generically. Instead of
bumping any of the static limits we have in place, we just drop them
altogether in favor of dynamically requesting additional EFI regions
whenever we realize that the currently mapped regions cannot satisfy our
needs. Like this, we can lower the initially requested regions, but
scale them to the specific needs if need be.

I had planned to revisit this patch series much earlier, but somehow I
didn't yet find the time. Any comments on my approach would be welcome
though, and if we agree that this may be a viable route to go down then
I'd be happy to further pursue it.
Patrick, thanks a lot! I will take a look at the [1] patchset next week.

Daniel A., Stefan, may I ask you to take a look at the [1] too and tell
us how it will work in your cases?



I tried to apply these patches now. 2/3 and 3/3 need forward porting. The file grub-core/kern/efi/mm.c that they touch is EFI-specific and not even compiled when building for/on [IBM IEEE1275] PowerPC, so I don't see how they would help on that platform.


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