[TECH TOPIC] Reaching consensus on CONFIG_HIGHMEM phaseout

[Jason Gunthorpe]

On Tue, Sep 09, 2025 at 11:23:37PM +0200, Arnd Bergmann wrote:

> I'm still collecting information about which of the remaining highmem
> users plan to keep updating their kernels and for what reason. 

On this topic of removing some parts of highmem, can we say goodbye to
kmap_high_get()? Only ARM uses it and only for
!cache_is_vipt_nonaliasing() systems.

Maybe if so then HASHED_PAGE_VIRTUAL can go too?

Jason