Re: [edk2-devel] Move ArmLib to BaseLib

Tue, 31 Mar 2026 06:33:51 -0700 


On Fri, 27 Mar 2026, at 22:06, Oliver Smith-Denny wrote:
> On 3/27/2026 1:56 PM, Leif Lindholm wrote:
>> On Fri, 27 Mar 2026 at 20:25, Oliver Smith-Denny via groups.io
>> <[email protected]> wrote:
...
>>> If we agree on this general path, I will take up the work to merge
>>> ArmLib into BaseLib (where appropriate). I will need to evaluate
>>> each function closer, but again, a quick review seems like most would
>>> be appropriate in BaseLib.
>> 
>> I vote yes.
>> 
>
> Great, I'll wait to get some additional input, but I'll start taking
> a look at this.
>

I think we may be conflating two different things here.

I agree that ArmPkg should not exist. And I agree that high-level functionality 
that is tied to things like page tables etc should be abstracted in a generic 
and portable manner, using a common library abstraction.

But that doesn't mean ArmLib should be subsumed by BaseLib. Some drivers are 
fundamentally ARM-only, and rely on ArmLib today. Moving those pieces into 
BaseLib serves no purpose whatsoever, and only increases the maintenance burden 
of the latter, give that it adds more disparate pieces of functionality to a 
library that has no defined purpose to begin with, other than a dumping group 
for 'stuff that you almost always need when writing EDK2 source code'.



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