Re: [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory model

[Dave Hansen]

On 5/16/25 07:08, Ingo Molnar wrote:
>> And is there any value to support !SPARSEMEM_VMEMMAP?
> Not really IMHO:
> 
>   .config.opensuse.default:    CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
>   .config.ubuntu.localinstall: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
>   .config.fedora.generic:      CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
>   .config.rhel.generic:        CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y

I look at the distro configs all the time as well.

But let's also not forget that none of these have lockdep turned on, and
we don't want to toss out lockdep support on x86, for example. ;)